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Chargeback
A chargeback is the refund of an amount paid by credit card to the cardholder's card when the purchased goods or services were not received, or when a transaction was not actually carried out by the cardholder.
HCE
Generating a token from the card number is essential to the security of payments made with mobile devices. The level of tokenization used depends on the need and on how critical the token is. Static tokenization: the token is generated once and stored in a database.
Online & Authorization
ISO/IEC 7816-5 defines how to use an application identifier to determine whether an application is present on a card and/or to retrieve the application on the card.
Fraud
Chargeback is the process of refunding a credit card payment when the goods or services that should have been received were not, or when transactions not made by the cardholder are identified. In Turkish it is translated as reversal of presentment.
Security
The TBB book 'Fraud Detection and Prevention Methods in Banking' analyzes the types of fraud threatening the banking and finance sector and individuals, with examples from the world and Turkey, and offers protection recommendations. This post explains how to access it.
Merchant & POS
A static QR code is a code whose content is fixed and can be used for multiple payment transactions. So what is the difference between a static and a dynamic QR code?
Online & Authorization
When a card transaction is made abroad, banks usually calculate the cost from a percentage commission, a fixed commission, and an exchange rate margin. The flow starts when the customer requests a cash withdrawal at a foreign ATM.
Merchant & POS
On-Us Leakage is a term used in the world of payment systems. On-us means the card-issuing bank and the POS-acquiring bank are the same. So what does on-us leakage mean in this context?
Clearing
Clearing: the transmission of transfer orders sent to the system, mediating their mutual delivery, obtaining authorization prior to settlement in some systems, and netting payment orders.
Merchant & POS
Open authorization covers the period between authorization, POS batch close, the bank's end-of-day process, and clearing. Learn which steps allow cancellation versus refund, and what a cardholder should do.
Credit Card
In credit card transactions made through a POS, receiving approval alone is not enough for the transaction to post to the card's statement period; settlement must also take place. The settlement period, known as the open-authorization waiting time, varies by transaction type.
Merchant & POS
Terminal Verification Results (TVR): a sequence of bits produced when a terminal reads an EMV card, based on logical checks such as an expired card. This data object is used to decide whether a payment transaction should be accepted online, declined, or allowed to proceed.