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POS terminal used for processing card payments at a merchant

Merchant & POS

How Does a POS Device Communicate with the POS Bank?

A POS is a functional device with its own dedicated software, customized to the authorization system of the bank it is connected to, that accepts credit or debit cards. The POS and the authorization system communicate using the ISO 8583 standard.

Diagram illustrating a bank's OnUs transaction flow and the process of opening ATMs to other banks' cards

ATM

What needs to be done to open ATMs to the use of all bank cards?

Suppose you are a newly established bank, wanting to offer customers all your products and services. Of course, this is not easy. First, the Bank's OnUs transaction processing step must run successfully before other banks' cards can be accepted at the ATMs.

Discover chargeback reason codes list

Payment Systems

What Are the Discover Chargeback Reason Codes?

Chargeback reason codes differ by card scheme. Here is the list of Discover chargeback reason codes and their descriptions, along with how merchants can use them.

Credit card used for a mail order transaction

Credit Card

Which Cards Can I Use for Mail Order Transactions?

Debit cards and prepaid cards are generally closed to mail order transactions. Mail order authorization is held on credit cards. Unless specifically requested at application, a card is issued closed to mail order transactions.

Collection POS web-based payment management dashboard

Merchant & POS

What is a Collection POS?

A Collection POS is a secure, web-based payment platform through which businesses and institutions manage their collections and generate the reports they need. Many similar products exist on the market under different names.

Credit card installment payment illustration

Credit Card

What Is Installment Payment?

Installment payment means dividing a product's price into a set number of equal amounts. For example, if a 100 TL product is bought in 5 installments, the cardholder pays 20 TL a month for 5 months, totaling 100 TL.

Illustration explaining the POS cashback feature

Merchant & POS

What is POS Cashback?

Cashback is a modern POS terminal service that allows cash to be withdrawn from the merchant's till while paying for goods and services. Although cashback is a feature specific to debit cards, you can also withdraw cash from an ATM...

Diagram illustrating the structure of a Bank Identifier Code (BIC)

EMV

What is a Bank Identifier Code (BIC)?

BIC stands for Bank Identifier Code. It is the universal bank identification code used for automated processing in banking and related financial environments, identifying banks as specified by the ISO 9362 standard.

Shared POS device used for processing multiple banks' card transactions

Credit Card

What is a Shared POS?

A Shared POS is a POS solution that allows the credit card applications of multiple banks, such as installments and loyalty points, to run on a single POS device. It automatically recognizes the cards of banks loaded on it and routes the transaction accordingly.

Diagram illustrating the soft chargeback retrieval request process between cardholder, issuer and merchant

Chargeback

What Is a Soft Chargeback?

A soft chargeback, also called a retrieval request, is a request for documents about a transaction the cardholder does not recognize. Learn why customers request them, what information merchants should provide, and why a fast response matters.

Diagram illustrating the retrieval request process in card transactions

Chargeback

What is a Retrieval Request?

A chargeback is when cardholders dispute a transaction made without their knowledge through their card-issuing bank. So what does a Retrieval Request mean? It is essentially a document request related to transactions a cardholder does not recognize on their statement.

Diagram showing the role of the Access Control Server (ACS) in the 3-D Secure authentication flow

Security

What is Access Security Control (ACS)?

Access Security Control (ACS) is the security protocol that the card-issuing bank must maintain in 3-D Secure to support cardholder authentication, functioning as a complete authentication solution for issuers and payment processors.