Glossary for secupay payment transactions

An explanation of payment terms, from A for accounting to Z for ZVT methods.

0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | XY | Z

1-click payments, also known as single payments: Convenient payment procedure in E-commerce. Registered customers can complete their purchase with a single click to the pay button without re-entering their payment information. A prominent example is Amazon's "Buy Now" function. During the first purchase, the stored payment and customer data are tokenized. 1-click payments are therefore usually available starting with the second purchase.

2-factor authentication  or 2FA for short: Two-tier security method for protecting bank, card, or customer accounts from unauthorized access. The 2FA process combines at least two independent factors to verify identity, namely

  • Knowledge factor, e.g. passwords, PINs or answers to secret questions.
  • Possession factor: for example, smartphone, smartwatch, card, token. Possession factor: for example, smartphone, smartwatch, card, token..
  • Biometrics factor: for example, fingerprints, facial recognition, iris scan, signature.

To perform a successful 2FA, users must therefore legitimize themselves twice. Example: Entering a password (knowledge) plus confirmation SMS on a registered cell phone (possession).

Three-stage security protocol originally developed by VISA for more security in credit card payments on the Internet. After entering their credit card number, cardholders are asked to additionally confirm their identity using a security code generated via a protected banking app. Only then is the payment released by the bank. Dual identity verification based on different factors is intended to reduce the risk of fraud, see also 2-factor authentication.


Abo-Commerce: Business model in e-commerce based on the automatic reordering of everyday goods. Well-known examples are cooking boxes, organic food boxes, subscriptions for diapers, razor blades, contact lenses or pet food. The objective is to bind customers to one’s own store in the long term. For customers, the service is convenient and often comes with additional price benefits or extra services. The payment amount is identical in each interval – unlike recurring payments.

Accounting  In cashless payment transactions, accounting service means that card transactions are initially pooled by the payment service provider in an insolvency-proof escrow account and paid out in one sum at the interval requested by the customer. This allows companies to save bank fees to a considerable extent compared to numerous individual transactions through direct clearing. Since accounting is a wire transfer, no data exchange agreement (DTA) with the merchant bank is necessary in this case.

A reconciliation of accounts.In electronic payment transactions, this refers in particular to reconciling the cash register data for all cashless payments with the data of the corresponding contractual partners (see acquirer) or with the incoming payments on the company account. Payment service providers support their customers with automated processes in this important and complex task.

Bank or payment institution that processes card payments on behalf of the merchant as payee. Companies that enable their customers to make cashless payments by credit or debit card conclude an acceptance agreement with an acquirer for the respective payment method.

Alibaba is a Chinese Internet group that operates, among other things, the B2B marketplace  the B2C shopping platform and, via its subsidiary Ant Group, the online payment service Alipay  

Mobile payment system developed by the Chinese company Ant Group (formerly Alipay). Originally a subsidiary of Alibaba, Alipay is one of the most popular online payment systems in China. Payment service providers such as secupay enable Chinese Alipay users to pay via QR code at many German store checkouts as well.

With secupay, credit cards such as Mastercard and Visa, debit cards such as Girocard and closed loop cards can be processed via one single All-in-one-terminal Until now, several terminals had to be used simultaneously for this purpose. The payment terminal automatically recognizes the payment method used in a matter of seconds.

American Express, AMEX for short, is an American financial services company that specializes in credit cards. Unlike the widely used Mastercard or Visa card systems, whose credit cards are issued by partner banks, American Express is the card issuer. Amex cards are more expensive and exclusive, and are accepted as payment by far fewer businesses worldwide.

Abbreviation for Application Programming Interface. In IT, an API is a programming interface that makes it possible to access and use the data and functions of existing software without a great deal of programming effort. For example, payment functions can be easily integrated into software for online stores via API.

Mobile, digital wallet from Apple that can be used exclusively on Apple devices such as iPhone, iPad or Apple Watch. Users can digitally deposit credit or debit cards in the wallet and use them to make contactless payments. In the USA, Apple Pay now also offers instalment payments in cooperation with banks (see BNPL) and its own credit card with cashback function. See also Wallet.

Risk of non-payment in cashless payment transactions due to fraud or insufficient funds in the account, see also Reversal of liability.

Approval or acceptance of a transaction. In cashless payment transaction, common authorization procedures are, for example, entering a PIN or signing. Depending on the procedure used, the payee incurs different authorization fees. In return, the default risk is reduced, and in some cases, there is even a full payment guarantee.

Announcement of a payment. A payment advice note contains a detailed list of all items settled by the payment and is therefore particularly useful for collective transfers or in connection with direct-debit payments.


Short for Bundesanstalt für Finanzdienstleistungsaufsicht (Federal Financial Supervisory Authority): As an independent authority headquartered in Bonn, BaFin is responsible for supervising and regulating banks, insurance companies, stock exchanges, financial service providers and investment companies in Germany. Its tasks include combating financial crime such as money laundering and terrorist financing. If legal requirements are violated, BaFin can impose fines or revoke the licenses of banks and financial service providers.

Account-linked payment procedure in which the payee, for example, a merchant, debits the payment amount directly from the customer's bank account by direct debit. To use the direct-debit system, customers must provide their bank details such as bank name, account number and IBAN and issue a direct debit authorization. Direct debit is a popular and cost-effective payment method for recurring payments, such as subscriptions, rents, insurance premiums, electricity or water bills. 

Digital or paper storage of accounting documents such as invoices, receipts, cash receipts or payment vouchers. The document archive must comply with the principles for the proper keeping and storage of books, records and documents in electronic form and for data access (GoBD). In addition, the statutory retention periods must be complied with.

Digital technology to manage data in a traceable and tamper-proof manner in a distributed infrastructure without central instant. Unlike marketplaces, e-commerce platforms, banks, or government agencies, for example, Blockchain does not require a central server controlled by a company or organization. Cryptocurrencies such as Bitcoin or Stable Coin are among the best-known blockchain applications.

Short for Buy Now Pay Later: Digital invoice or instalment purchase in e-commerce. Customers have the option to pay the purchase amount with an extended payment term (e.g. 2 weeks/ 4 weeks) or in several instalments. The seller (e.g. online store) immediately receives the full purchase amount. Payment services such as Afterpay, Klarna or Paypal usually offer users BNPL without additional fees or interest.

Check of creditworthiness. Before entering into credit agreements, Purchase on invoice or longer-term contracts with recurring payments, such as rental agreements or subscriptions, the customer's creditworthiness is generally checked in advance. If the result is negative, the customer is rejected and the contract is not concluded.

Benefit programme for customer loyalty. Customers who purchase products or services from a particular provider are rewarded with a bonus in euros or points, depending on revenue, which can be exchanged for non-cash rewards or used as shopping credits, for example. Bonus programmes can be set up by individual companies or as a multi-partner card in a retailer network, for example as a City Card.
Payment network for card payments, for example, payment by credit or debit card. Financial institutions that are members of the respective network can issue corresponding cards as issuers or become contractual partners as acquirers for merchants and other companies wishing to accept card payments. Fees are incurred for participating in the card scheme, which the acquirer generally passes on to the points of acceptance as part of the interchange fees.

Cashback Also known as money-back promotion: a special bonus programme in which customers are rewarded for their purchases with cash back. So, unlike many other loyalty programmes, they collect monetary amounts instead of bonus points depending on shopping behaviour. Cashback systems are offered by retailers as well as by brand manufacturers and service companies. Known as financial transfer transactions, they are generally subject to control by the German Federal Financial Supervisory Authority (BaFin).

Chargeback is the process by which a credit card payment is reversed by the customer, i.e. cancelled. Reasons can be fraudulent transactions, unauthorised payments or problems with the goods. The chargeback process is usually time-consuming and can be expensive for merchants, especially if they cannot provide the necessary evidence.

Checkout area, in e-commerce the point in the purchasing process where payment is made.

Inter-company customer cardthat is valid at all participating stores. City or centre cards are often used as a collaborative local or regional marketing tool to strengthen customer loyalty and that, in some cases, can be loaded with credit and used for payment.

Combination of two or more payment methods on one card. Example: Many German banks and savings banks have also equipped their Girocard with additional payment brands such as Vpay or Maestro.

Service offered by payment institutions or payment service providers to their customers in payment transactions. During this process, payments with different payment types are processed and settled collectively, which increases transparency and efficiency.

Vouchers, a proven marketing tool in retail. Coupons grant customers benefits that can be redeemed at the time of their next purchase, for example, discounts or free gifts. Couponing, i.e. the issuing of coupons, is now increasingly occurring digitally, in part via portals such as Groupon or DailyDeal.

Term from e-commerce for the linking of different sales channels. Customers can, for example, pick up their online orders (Click & Collect) or return them (Click & Return) in-store. Conversely, if the desired item is not in stock at the store, the goods can be ordered on-site for the customer and delivered to their home.

An alternative form of financing for projects of all kinds. Via a digital platform, many people can participate in realizing product and business ideas or social projects with very small amounts. If the respective project can be successfully implemented, they usually receive something in return, such as a free copy, discounts or preferential prices, or intangible recognition, such as special appreciation as a donor. If, on the other hand, the required sum for the start of the project is not collected, the investors receive their money back. Special forms of Crowdfunding are crowd-investing and crowdlending.

For-profit variants of crowdfunding. While classic crowdfunding is usually about collaboratively and privately financing innovative ideas or social projects, here the focus is either on the prospect of interest plus repayment = crowdlending or a share of the profits = Crowd investing  

Process by which banks, payment institutions or businesses and other organizations collect information about their customers to identify and minimize risks such as money laundering, terrorist financing, and other illegal activities. A customer identity check and risk assessment are an important part of the CDD.


Card linked to a bank account that can be used for cashless payments or cash withdrawals. Unlike a credit card, the purchase amount is promptly debited from the customer's account. The most widely used debit card in Germany is the Girocard issued by the German banking industry. Credit card organizations such as Mastercard or VISA also offer debit cards for bank customers in Germany and other countries.

Management and accounting of outstanding receivables from their origin, i.e. purchase with payment term, to receipt of payment. In cashless payment transactions, accounts receivable management is an important and time-consuming task that is often assigned to an external service provider.

Diners Club is an international credit card company. The Diners Club card is now accepted in over 190 countries and offers its customers special offers and benefits such as bonus programmes or travel insurance.

Like accounting, direct clearing is a form of electronic payment processing. With direct clearing, all Girocard payments are transmitted directly to the merchant's bank and are usually visible on the merchant's account the day after closeout. The prerequisite for this is a DTA agreement, i.e. a data exchange agreement, with the bank so that it can debit the transactions from the payer and credit the merchant account. In direct clearing, fees are charged by the bank per transaction depending on the contract.

In finance, disagio refers to a deduction from the nominal value and represents a form of fee. Merchants who accept credit card payments, for example, pay a disagio in the form of a deduction from the purchase amount. Borrowers or investors often pay a deduction from the amount of the loan or from the price of a security.

Discover ist eine US-amerikanische Kreditkartenmarke, mit mehr als 70 Millionen Karteninhabern vorrangig in Nordamerika. Die Karten bieten umfangreiche Payment-, Cashback- und Belohnungsprogramme. Discover gehört zu den größten Kartensystemen im US-amerikanischen Raum.

Our Display Logo App or Ingenico terminals makes it possible to display logos or advertisements as an image or animated GIF with a maximum size of 500 kB on the terminal display. The respective file is displayed when the terminal is in idle mode. Different files can be stored for "Cashier" mode and "Stand Alone" mode.


E Commerce  – Electronic commerce: Trade in goods and services via the Internet. Payment plugins are available for each store system for online store payments.

Software to control all processes of an online store, for example, to create products and product descriptions, manage inventories, manage prices, process orders, accept payments. Numerous manufacturers offer ready-made solutions, also known as web store software or online store systems, including, for example, JTL Shop, Gambio, Magento, OScommerce, Oxid eSales, Sage, Shopify, Shopware, WooCommerce or xtCommerce.

Electronic card reader for processing cashless payments at the POS. Originally, the abbreviation EC stood for the Electronic Cash payment procedure with bank card and PIN entry. Modern EC terminals also support other mobile, contactless and cashless payments via various interfaces such as chip card readers, NFC or Bluetooth, for example with debit card, credit card or digital wallet.

An EC terminal app programmed by secupay for Ingenico terminals enables paperless and fast installment purchases directly at the POS card terminal. It supports financing amounts between €200,00 and €10,000.00.

E-money, short for electronic money: electronically stored monetary assets, such as account or PrePaid balances. E-money can therefore be stored on bank servers but also, for example, on chip cards or smartphones. Attention: Cryptocurrencies such as Bitcoin do not constitute e-money within the meaning of the Payment Services Supervision Act (Zahlungsdiensteaufsichtsgesetz ZAG). More on the distinction between e-money and coupons can be found here.

The egoods App from secupay for EC terminals makes it possible to retrieve and print PIN-printing products and activate POSA products via the terminal. Mobile credit, gift and gaming cards, and online payment methods, to name a few, are supported. Optionally, a barcode scanner can be operated on the terminal to more easily capture EAN codes and card IDs. Cash register integration is also offered by secupay.

Short for Electronic Direct Debit. Convenient and secure payment method, where the amount is debited directly from the customer's bank account.

Trust or escrow account. In e-commerce the escrow service protects both sides from fraud, for example by delivering goods only after the payment amount has been deposited in the escrow account or, conversely, by releasing payment from the escrow account only after the customer has confirmed receipt of the goods. Even with digital financial transactions such as Crowdfunding or Crowd investing deposited funds can be held in escrow accounts in an insolvency-proof manner until they are ready for disbursement.

The eTerminal offers merchants and service providers a web-based possibility to submit merchant-initiated direct debits and credit card payments manually or collectively via CSV upload as 'Merchant Initiated Transaction' (MIT). The eTerminal payout function is interesting for companies and platforms that regularly pay out to a closed group of users. Die eTerminal Payout-Funktion ist für Unternehmen und Plattformen interessant, die regelmäßig an einen geschlossenen Benutzerkreis auszahlen.

Digital wallet on a smartphone or smartwatch in which various cashless means of payment can be stored for mobile and contactless payment. Well-known wallets include Apple Pay and Google Pay. Read more in our Blog article.

Vouchers, loyalty programmes & couponing

Also known as purchase of receivables: Form of financing for companies. Selling open receivables to a factoring service provider increases liquidity, and companies also often save considerable expense on accounts receivable management and limit their default risk. For this, they usually pay a deduction from the receivable amount as a fee to the service provider.

Also known as fiat currency, fiat money is a legal tender regulated by the government of the respective country and central banks. It includes traditional currencies such as the euro or the U.S. dollar. The value of each currency is usually dependent on the government’s economic and political strength. The term "fiat" is derived from the Latin verb fieri and translates as "it becomes" or "it arises". The term fiat money was developed to create a distinction from cryptocurrencies

Company that provides financial services, i.e. services in areas such as financing, investment or payment transactions. They include, for example, banks, building societies, investment fund companies, credit card organizations, leasing companies, insurance companies, asset managers or securities exchanges and insurance companies. Payment service providers (PSPs) or payment institutions such as secupay also count as financial service providers and are subject to supervision by BaFin.

Payment service subject to authorization pursuant to the German Payment Services Supervision Act (Zahlungsdiensteaufsichtsgesetz - ZAG). In this case, the payment service provider transmits funds from third parties with whom no relationship by account exists. Example: As part of a cashback campaign the payment service provider pays out sales-related credits to supermarket customers for the purchase of certain products or refunds the purchase amount following a product recall by the manufacturer.

Short for Financial Technology: Generic term for technology used to provide financial services, often used as a synonym for start-ups or digital companies offering digital financial services.

Fraud prevention is a dynamic security mechanism used in electronic payment transactions to prevent calculable payment defaults. secupay offers comprehensive services for checking creditworthiness and assessing a transaction’s risk during the payment process, to identify fraudulent intentions and prevent execution. If a payment default still occurs after the order has been completed, this can be covered for payments by direct debit and purchase on account through the secupay payment guarantee.


gambio software is an online store system for which secupay offers an easily integrated payment plugin. This allows the integration of payment methods such as purchase on account, credit card, SEPA direct debit and SOFORT bank transfer, as well as functions such as automatic shipping notifications, cancellations and refunds directly from the backend.

German law designed to prevent money laundering and terrorist financing. Among other things, the law obliges banks and companies to identify their customers and retain the identification data. They must also conduct risk management against money laundering and terrorist financing. Violations of the GWG may be punished by fines, monetary penalties or imprisonment.

Mixed baskets: Important function on online marketplaces, which enables customers to bundle goods from different suppliers in their shopping cart and pay for them together in a single transaction. As part of the payment splitting process, the payment service provider ensures that each supplier subsequently receives the correct purchase amount.

Widely used debit card issued to account holders by German banks and savings banks. There are around 100 million Girocards in circulation in Germany, and they can be used to make cashless payments at more than one million EC terminals in Germany. With around 6.7 billion transactions (as of 2022), the Girocard is the most widely used payment card in Germany.

Identification number required to collect direct debits. The creditor ID is requested from the Bundesbank.
Short for the generally accepted principles for keeping and storing books, records and documents in electronic form. The GoBD regulates which basic principles companies must observe in order for their records to be recognized by the tax office. These include the following principles: Traceability and verifiability, truth, clarity and continuous recording, completeness, individual record keeping, accuracy, timely entries and records, order and immutability.

Google Pay Google Pay is Google's eWallet for cashless payments for users of Android devices.

Instrument for increasing sales and customer loyalty in retail. Prepaid Vouchers can be redeemed by the holder at the checkout like cash. Vouchers are a popular gift. Companies also often issue vouchers to employees for tax-free non-cash benefits, such as petrol or restaurant vouchers.

Assumption of liability or default risk by the payment service provider. The risk of non-payment due to fraud or unfunded accounts is generally borne by the merchant accepting non-cash payments. If liability is reversed, the payment service provider is liable. Liability reversal, i.e. full payment guarantee, exists, for example, for payments with 2-factor authentication such as the 3D-Secure procedure.

Transparent fee model for credit card payments, with the various fee components shown separately. Interchange ++ includes the interchange fees, plus the fees charged by the credit card organization (Card Scheme), plus the fees charged by the acquirer.

Proof of identity and access authorization, for example, when accessing an online account or a bank account.

Business model and payment method in Mobile commerce. Within a particular app, customers can purchase paid digital products or services, such as additional levels in an online game, premium content in a news app, or advanced features in a language learning app. Payment is made using the payment method stored in the respective app store.

Initial Coin Offering is still a fairly new method of raising capital to finance entrepreneurial ventures, primarily used by start-ups with a business model based on cryptocurrencies. ICOs use blockchain technologies to create virtual currencies, or tokens, which are sold to interested buyers in an unregulated public bidding process.

Also known as interchange fee: important component of credit card fees. Interchange fees are charged by the cardholder's bank (issuer) and paid by the merchant's bank (acquirer). The merchant bank bills the merchant for the fee. Interchange fees are automatically deducted from the purchase amount along with all other fees.

Company that issues payment cards, usually a bank or credit card organization. The issuer manages the accounts of customers who pay by card.


JCB, which stands for Japan Credit Bureau, is a global payment system headquartered in Tokyo, Japan. The credit card company issues payment cards that are in use worldwide.

JTL Shop ist eine deutsche E-Commerce-Software, die Online-Händlern ermöglicht, einen eigenen Onlineshop zu betreiben. Für die Einbindung Ihrer Wunschzahlarten, z.B. Kauf auf Rechnung, Kreditkarte, Sofortüberweisung, SEPA-Lastschrift oder Paypal in ein JTL5-Shopsystem bietet secupay ein multishopfähiges Zahlungsplugin


The Settlement tax, auch Abgeltungssteuer, ist eine Abgabe auf Erträge aus Kapitalvermögen, wie beispielsweise Zinsen im Rahmen des Crowdinvestings. Die Kapitalertragssteuer wird direkt vom Zahlungsinstitut einbehalten und an das Finanzamt abgeführt. Die Höhe der Steuer beträgt aktuell 25 Prozent.

Acceptance of cards as a cashless means of payment. Around 60 percent of stationary retail sales are now paid by card. Card acceptance is therefore an important customer service. Card acceptance requires a contract with an acquirer. In addition, the respective card type must be indicated on the EC-Terminal or in the online checkout must be technically activated by the payment service provider.

A Card reader, also EC terminalenables credit cards, debit cards, wallets, etc. to be read and processed. Card readers are used in stationary trade, restaurants, etc. and are usually equipped with a PIN pad that allows the payer to confirm the payment with a personal identification number.

Form of cashless payment using a payment card, such as a debit, credit, or customer card. Card payments can be made in a variety of ways, for example, via chip card reader at the EC terminal, contactless or mobile via smartphone.

Cashless form of payment in which the payment card no longer has to touch the chip or magnetic stripe reader at the EC terminal. Instead, it is sufficient to hold the card or a smartphone with eWallet close to the card reader. Data is usually transmitted by radio, see also NFC. In 2022, already around 80 percent of all card payments at in-store checkout were contactless.

Account reconciliation, also referred to as account reconciliation, refers to the process of matching financial transactions to accounting records and bank statements to ensure that all entries have been recorded correctly. This is an important step to ensure financial integrity and accuracy and to detect potential errors or fraud.

Payment card for cashless payment. Unlike the German Girocard, Credit cards can be used for payment worldwide as well as in e-commerce. Unlike a debit card, sales are usually debited from the customer's account monthly rather than immediately. Optionally, the credit card can be equipped with a credit line if the cardholder has a corresponding credit rating. Credit cards are issued either by a bank in cooperation with a credit card organization, such as MasterCard, Visa or JCB (Japan Credit Bureau). Or they come directly from a credit card company, such as American Express, Discover or Diners Club.

Digital cashless payment method based on cryptographic technology such as Blockchain. Unlike fiat money, cryptocurrencies are not an official means of payment. The most popular cryptocurrencies include Bitcoin, Etherum, Tether or USD Coin. Cryptocurrencies are traded on special online platforms called crypto exchanges. Since most cryptocurrencies are not linked to real assets, prices can fluctuate a lot.

Customer loyalty umfasst alle Maßnahmen, die darauf abzielen, Kunden langfristig an das eigene Unternehmen zu binden und zu wiederholten Käufen zu animieren.

KYC is the process of identifying customers for anti-money laundering purposes. Before companies accept payments from customers, they must first verify their identity and address and obtain further information if necessary.

Platform solutions

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Cashless payment initiated by the merchant, see also Direct debit

Also direct debit authorization: Account holder’s consent to debit money from the account by direct debit. The direct debit authorization must be granted in advance to the company wishing to debit money from the customer's account by direct debit and the account holder can revoke it in writing at any time without giving reasons and without notice.

A loyalty programme is a programme in which customers are rewarded by the retailer for their purchases or other activities. Points or other rewards can be collected and later redeemed for rewards. Loyalty Programme Loyalty programmes are used to bind customers to a company and to build long-term customer relationships. See also bonus programme.


International payment system for Mastercard debit cards. Many German banks and savings banks have issued Girocards with Maestro function to account holders. In 2023, Mastercard will phase out the system. Giro cards issued after 30 June 2023, can no longer be used by German customers to make payments abroad. Go to the blog article “Will the Girocard be abolished?"

Magento is an online shop software that can be used to create custom online shops with advanced features. The secupay payment module enables the acceptance of payments directly via the shop created with Magento. Various payment methods such as credit card, PayPal, instant transfer or direct debit are supported.

Business model in e-commerce. On a Marketplace many different companies can offer goods or services, reaching significantly more customers than with their own online store. For this purpose, marketplace providers offer a common infrastructure for selling and processing payments online. secupay handles the processing of mixed shopping carts and payment splitting.

Also known as a trade-show terminal or short-term terminal. A mobile payment device for short-term events or temporary locations. It enables merchants on-site at weekly markets, fairs, Christmas markets, etc. to accept payments via various payment methods.

Mastercard is an internationally recognised credit card company. Customers can use their credit cards in many shops and online shops worldwide. Mastercard also offers debit cards and prepaid cards. The company works with banks and credit institutions to offer its customers a wide range of financial products and services. Contactless payments are also possible with Mastercard. 

Abbreviation for Mobile commerce: digital commerce via mobile devices such as smartphones or tablets. According to Statista, one in five customers in Germany already uses their mobile phones to shop every week. In China or the USA, the figure is more than 30 percent.

Also known as a Terminal apps, sind von secupay programmierte Zusatzanwendungen für EC-Terminals auf Basis des Open Application Interface (OAI) von Ingenico. Gebotene Mehrwerte für Kartenlesegeräte sind z.B. die Durchführung von Ratenkäufen, die Abwicklung von Gutschein- und Kundenkarten, das Ausspielen von Display-Werbung und das Aktivieren von POSA-Produkten, wie Amazon, Zalando oder Spotify-Gutscheine ohne zusätzlich benötigte Hardware.

Hybrid form of financing for companies that legally and economically ranges between debt and equity. Mezzanine capital is usually granted on a long-term basis and without strong collateral. Interest is often paid on a performance-related basis. Because the risk for the investor is higher, interest rates are usually higher than for a traditional bank loan, for example. Common forms include subordinated loans, silent partnerships, profit participation rights and convertible bonds. Can be raised via Crowd investing .

Also interchange fee regulation: Regulation of the multilateral interchange fee for card payments in the EU introduced throughout Europe in 2015 (see also Interchange Fee). Since then, card-issuing banks have been allowed to charge the merchant bank a maximum of 0.2% of sales for private debit card payments and 0.3% for private credit card payments by their customers. The interchange fee is usually passed on by the merchant bank to its counterparties (merchants) along with other fees. MIF regulation does not apply to corporate credit cards, store cards and cards from outside the EU.

Mobile commerce refers to commerce via mobile devices such as smartphones and tablets. It enables customers to search for, buy, and pay for products or services online on websites or apps, regardless of their location.

The modified eCommerce store software is an open-source store system. The payment module offered by secupay integrates the payment methods purchase on account and SEPA direct debit with payment guarantee as well as credit card, prepayment and SOFORT. An automatic dispatch message is also part of its functional scope.

Short for Mail Order Telephone Order: classic ordering process in mail order or tele-shopping by email or telephone.

Sales via multiple distribution channels such as retail store, online store, markets and fairs. Sales via multiple distribution channels such as retail store, online store, markets and fairs.


Short for Non-fungible Token:  Digital object that virtually represents a real asset. NFTs are unique, indivisible, non-interchangeable, and verifiable.

Short for Near Field Communication: Wireless transmission method used for contactless payments, among other things. The means of payment, for example, a Girocard, a credit card or a smartwatch with a digital wallet, simply needs to be held close to the EC terminal.

Uncomplicated option to accept cashless payments via payment link, for example, or initiating them via eTerminal without having to technically integrate the solution into your own systems.


Connection of new customers or business partners, for example, activation of new customers or providers on an online marketplace, activation of new investors or investment projects in crowdinvesting. As a rule, an identity check and credit check are prerequisites.

Ready-to-use software module that is simply connected or "plugged in". With plugins, the range of a software’s functions, for example, a web store, can be expanded modularly and without integration effort very quickly and easily.

Sales via multiple distribution channels, e.g. retail store, online store, markets and fairs. Unlike multichannel, however, the different channels are not operated in isolation and in parallel. Rather, with omnichannel, important information such as inventory, orders, payments, or returns are seamlessly linked across all channels.

Short for Open Payment Initiative: This is an XML-based interface between the cash register and the card reader that is independent of the operating system. The payment terminal is connected to the cash register via TCP/IP (Transmission Control Protocol/Internet Protocol).

Cashless mobile payment methods based on a barcode or QR code. To use optical payment methods, customers need a mobile device that can show the corresponding codes on the display or read them from the checkout display. Alipay.

OScommerce is an open-source store system. With the secupay payment extension, the payment methods direct debit and purchase on account with payment guarantee, credit card, prepayment and SOFORT Überweisung can be integrated for both B2B and B2C.

OXID eSales is an e-commerce platform that enables merchants to create and operate online shops. The secupay payment module is a plugin for the OXID eShop that enables various payment methods. It supports various payment methods such as credit card, PayPal, Sofortüberweisung and many more.


Mobile EC terminal model series based on the Android operating system from CCV. Read more about the new smart terminal generation in the Blog article.

Convenient and secure online payment method where the customer receives a link via a digital channel such as email, digital bill, SMS, chat or social media page that leads directly to a checkout page where payment can be made. Paymentlink / Pay-by-Link makes online sales possible even without your own web store with a checkout function.

In short, PSP, is a company that handles the technical processing of a wide range of electronic payment services with regulatory approval (BaFin and ZAG licenses).

Allocation of a payment amount to different payers or recipients. Payment splitting is an important function on online marketplaces when it comes to, for example, splitting the payment amount for a shopping cart among different merchants or deducting and distributing pro rata commissions and fees. Payment service providers such as secupay offer payment splitting.

In addition to accepting cashless payments, it must be ensured that payouts can also be processed correctly and promptly, for example for returns in online shopping, for interest or redemption payments in Crowd investingfor remuneration and commissions or within the scope of Cashback campaigns.

Paypal is an online payment service that allows users to send and receive money securely and easily. Paypal Buyer Protection protects payers in case of non-delivery by the merchant. Payment is made by direct debit from bank accounts, deposited credit cards or PayPal balance.

Short for Payment Card Industry Data Security Standard. An international set of rules for the credit card industry to curb credit card fraud and abuse on the Internet. All companies that process cardholder data must demonstrate compliance with the standard.

Payment solution tailored to the specific needs of online platforms for example, business models such as online marketplaces, Crowd investing- or Crowdfunding-platforms, rental exchanges or brokerage platforms. Important functions in the platform business include mixed shopping carts, payment splitting, Onboarding or escrow service, i.e. collecting funds in escrow accounts.

Short for Point of sale  Place where a transaction is conducted, often used as a synonym for the physical store.

First German online store for EC terminals, payment processing at the terminal and terminal add-on applications. POS-cash is a subsidiary of secupay AG.

Commercial provider of e-commerce software for which secupay AG offers a payment plug-in. This add-on for PrestaShop supports all desired payment methods, the function of manual shipping messages, etc.

Short for Payment Services Directive 2: European Payment Services Directive, which has been implemented in German law since 2018. With the PSD2, various regulations were enacted to increase security in payment transactions and enable more competition between payment institutions. In particular, the requirement for strong customer authentication has been introduced for many forms of cashless payments.  

Technical term for payments initiated either by the account holder (push) or by the payee (pull). Push payments include, for example, a Bank transfer or confirming a card payment. Direct debits, on the other hand, represent pull payments.


The Quittungs-App, a receipt app, is an app offered by secupay for Ingenico EC terminals. The app enables receipts and sales slips to be printed for both card and cash payments – even on the go, without a cash register. For this purpose, depending on the configuration, articles with fixed prices as well as article groups and prices can be selected or entered in the terminal.

An optical payment method. QR code payment allows users to initiate payments by scanning a QR code with their smartphone/tablet camera and execute it via their preferred payment method, such as bank transfers or Paypal.

Payment modules & plugins for e-commerce payments in an online store

Choose the online store module that suits you:


Option to pay a purchase amount not due immediately, but over an agreed period of time in several, fixed instalments. To make it easier for customers to make spontaneous purchases and increase sales, many retailers offer purchases on instalment in cooperation with a payment service provider. The merchant receives the purchase amount immediately, and the customer pays the instalments to the service provider. The instalment purchase is usually preceded by a credit check.

Purchase on account is a popular and important payment method in e-Commercein MOTO business or in B2B business with commercial customers. Customers receive an invoice together with the goods, which they pay within the specified period. The usual time is 10 to 14 days.

Short R2P, RTP: modern, digital payment method that is particularly convenient for customers. Customers receive a digital Payment-Link with all the information about the transaction, for example by e-mail or SMS. Only by clicking on the link, they trigger the payment process by bank transfer. RTP speeds up the payment process for Purchase on account and enables merchants to make payments even without an EC-Terminal or online store.


Charge in cashless payment transactions levied by the card scheme operator, for example by a credit card organization such as Mastercard or VISA.

Also known as credit scoring: Method of measuring the creditworthiness of a customer or business partner using a scale value.

Short for Software Development Kit. An SDK is a collection of programming tools and program libraries used to develop software. It supports software developers to create applications based on it and to integrate interfaces. As a rule, there is a software development kit for each programming language, for example, for PHP, Java, Android. You can find the SDKs available at secupay here.

secubase refers to the software for Ingenico terminals developed by secupay, which enables the operation of additional applications as terminal apps. secubase can be used on all Ingenico terminals of the Telium and Tetra series as long as they are operated via a TCP/IP connection.

With its loyalty division secucard secupay offers customer loyalty solutions for face-to-face and online commerce. Coupons, vouchers or customer cards with individually designable loyalty programmes can be accepted contactless or via optical capture of the card data at the POS via cash register, tablet or terminal.

With "secuIdent", secupay has created an online tool within the secupay web portal secuOffice to identify contractual partners, which meets all legal requirements and enables a fast, simple and secure KYC process.

Security tokens are digital assets based on blockchain technology. Unlike digital vouchers or cryptocurrencies, they are subject to securities regulation. In Germany, the BaFin is responsible. They are therefore official, digital securities that grant investors the same rights as traditional capital market products. Tokenized assets are issued via a Token offering.  

The secuOffice web portal displays all transactions (deposits and withdrawals), remittance advice and invoices. Transaction data from e.g. payments or voucher redemptions are available in the system in real-time. All data can be exported in CSV format for further processing. All functions can be integrated into your own systems via an interface.

Short for Single Euro Payment Area. In addition to the 28 EU Member States, the Single Euro Payments Area also includes Iceland, Liechtenstein, Norway, Monaco and Switzerland. In the SEPA area, standardized procedures are offered throughout Europe for cashless payments by bank transfer, Direct debit or card payment. SEPA payments can only be processed in euros. If the payment accounts addressed are held in a different currency, the account-holding payment service provider must perform a conversion.

Store modules are prefabricated software modules to easily expand e-commerce software via PlugIn.

Shopware is a modular e-commerce software that enables online merchants to create a professional online shop. With numerous functions and extensions, Shopware is a popular solution for small and medium-sized businesses. Various payment methods can be integrated into the Shopware shop via the secupay payment module.

With the help of smartZVT integration (see also ZVT), POS software and EC terminals can be connected network-independently via an Internet protocol and assigned via a management console. The cash register and terminal can be located in different networks. One terminal can work with several cash registers and one cash register can work with several terminals. The prerequisite for integration via smartZVT is secubase software on the card terminal and the integration of the secuConnect-interface into the cash register application.

Modern variant of e-commerce via social media or other interactive shopping channels. Products or services are often presented in person as part of live shows or short videos.

Short for Secure Socket Layer, established protocol for secure, encrypted data transmission on the Internet.
Share of the respective stakeholder in a payment amount. Example: The purchase amount paid by the customer on an online marketplace is divided proportionally between at least two stakeholders, namely the platform operator and the supplier of the goods. In addition, shares for other stakeholders may need to be considered, for example, for payment processing, financing, or securing the offered good or service.

Also known as a Strong Customer Identification SCA: The obligation for strong customer identification was introduced across Europe as part of PSD2 and will also apply to many online payments in Germany from 2021. Since then, card payments and bank transfers have generally had to go through a 2-factor verification process.

Short for transaction: common settlement unit for charges in cashless payment transactions. A fixed fee and/or a percentage of the transaction amount is usually charged per transaction.  

Short for Technical Annex. The German Banking Industry (DK) defines rules for German payment transactions in the Technical Annex (Technischer Anhang). It defines new regulatory requirements and security standards for contactless card payments at EC terminals. After the changeover to TA 7.2 of the German banking industry or to DC POS 3.0 of the credit card organizations, the single tap function is activated so that the cards do not have to be inserted again for contactless payments with PIN.

Upon request, we pay credit card and Girocard account payments to the day, i.e. the payment corresponds to the exact amount of your closeout. Fees are not offset against the payout but invoiced separately. A daily closeout is a precondition for this.

Applications programmed by secupay for card terminals based on Ingenico's Open Application Interface (OAI), see also Value-added apps.

Digitization of assets or rights using blockchain technology. Tokens are considered to be very secure. To protect sensitive payment information from unauthorized access, credit cards are often stored as tokens in digital wallets or for one-click payments.

TWINT is a mobile payment method from the largest Swiss banks. Payment is made via smartphone app after entering a payment code. The payment is approved via a Bluetooth Low Energy (BLE) beacon or numeric code. The numerical code can be conveniently entered as a QR code. Payments with TWINT are currently only possible in CHF.


Payment order in which money is transferred from one account to another. In contrast to Direct debit the transfer is initiated by the account holder and cannot be reversed.

Union Pay, also known as China UnionPay/CUP, is the only credit card organization in the People's Republic of China. With several billion cards issued, CUP is the world's largest card network. It is primarily used by Chinese buyers for purchases at home and abroad.

A globally accepted payment network and credit card brand. It enables the use of VISA credit and debit cards for purchases and payments worldwide, online and offline. VISA offers extensive security features and a wide acceptance range at merchants around the world.

Prepayment is a method of payment in which the customer pays the amount before the goods are shipped or the service is provided. For online merchants, this payment method is extremely secure, as there are no payment defaults to worry about.

Debit card from VISA. German banks have been issuing Vpay cards to their customers since 2005, often in combination with the Girocard. VISA has been gradually switching to the new VISA Debit brand since 2022. These cards are increasingly offered not as a co-badge but as an alternative to the Girocard and require an acceptance agreement with a VISA merchant bank acquirer). There are fees for this.

Recurring paymentsare a form of subscription payment in which payment amounts can vary from interval to interval. This is the case when customers can flexibly and individually add or cancel services as part of the subscription. The merchant must resubmit payment amounts to the Payment Service Provider accordingly on each due date.

WooCommerce is a plug-in for WordPress applications that adds the functionality of an online store to the content management system. The payment module offered by secupay provides 1-click payments for credit card and direct debit, as well as the acceptance of vouchers and loyalty programmes without any additional effort.


secupay offers a payment plugin for the xt:commerce 3 online store system with the payment methods preferred in Germany: purchase on account, SOFORT transfer, credit card and SEPA direct debit. At the same time, the plugin enables automatic shipping notifications.


Short for Payment Services Supervision Act. The Act regulates the provision of payment services in Germany. Any payment institution that provides payment services on a professional basis in Germany must be licensed by the German supervisory authority BaFin. To be licensed by BaFin, payment institutions must demonstrate not only sufficient capital but also, among other things, that customer funds are protected in the event of insolvency.

With Payment methods, a distinction is made between cash payments and cashless payment methods. The most popular cashless payment methods in Germany include SEPA direct debit, credit card, purchase on account, bank transfer and wallet payments, such as Google Pay and Apple Pay. secupay offers cashless payment methods for both brick-and-mortar retail and online retail.

In Germany, the Payment Services Supervision Act (Zahlungsdiensteaufsichtsgesetz - ZAG) covers the following payment services: deposits and withdrawals, direct debits, credit transfers, card payments with and without granting credit, financial transfer transactions, activities as an acquirer (merchant bank) or issuer (card-issuing bank), payment initiation services such as Paypal, and account information services. Anyone wishing to offer these services on a commercial basis requires a BaFin license.

In Germany, the Payment Services Supervision Act (Zahlungsdiensteaufsichtsgesetz - ZAG) covers the following payment services: deposits and withdrawals, direct debits, credit transfers, card payments with and without granting credit, financial transfer transactions, activities as an acquirer (merchant bank) or issuer (card-issuing bank), payment initiation services such as Paypal, and account information services. Anyone wishing to offer these services on a commercial basis requires a BaFin license.

The Payment Services Supervision Act (Zahlungsdiensteaufsichtsgesetz - ZAG) distinguishes between payment service providers and payment institutions. According to the ZAG, payment institutions are "all companies that provide payment services on a commercial basis or to an extent that requires a business operation set up in a commercial manner." Payment service providers, also known as payment service providers (PSPs), include credit institutions and e-money institutions in addition to payment institutions.

With Purchase on account or card payments the merchants face the risk that the customer cannot or will not pay the due purchase amount, even though they have already received the goods or service. For an additional charge, many payment service providers guarantee payment to the merchant on request and assume the risk of default.

An extension or integration that allows various payment methods to be integrated into a website or e-commerce system. It makes it easier for online merchants to process online payments securely and offer a relevant payment mix. Payment plugins are available for different online shop modules, such as Magento, JTL, shopware or wooCommerce.

Zahlungsverkehrsterminals (Payment terminals) A ZVT interface enables communication between POS software and payment terminal using a ZVT protocol. The payment terminal is connected to the cash register serially (with a cable) or via TCP/IP (Transmission Control Protocol/Internet Protocol), i.e. via LAN/DSL or WLAN network. This allows the payment amount to be transferred from the cash register to the card reader, and the cash register receives the payment status as feedback. Communication via smartZVT is less complex.


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