Search
145 articles found
Credit Card
The Credit Reference System (KRS) is an information sharing system that, using modern methods, enables detailed information about individual credit product customers to be shared among KKB member institutions, in order to determine the risk factor…
Online & Authorization
In EMV, data is stored in Tag-Length-Value (TLV) format, and it is carried between the card, the POS terminal, and the authorization system in this same format. This post lists every EMV Tag, its type, and its description.
Security
The first transaction made after a customer's card data is stored with a merchant is called the First Credential-On-File transaction. BKM expects it to be flagged with the value "C" in switch message field DE48.PDS86, and BRSA draft rules govern how card data may be stored.
Payment Systems
TCR stands for Transaction Record Component, the packets that carry transaction information in a clearing system. Transaction types in a clearing file are distinguished by transaction code and usage code values, and this data is sent inside TCR packets.
Credit Card
KKB was established, under banking law, to enable the exchange of all kinds of information and documents among at least five banks, and it also shares credit information about customers. The Credit Bureau of Turkey also serves deposit banks, participation banks, financial institutions, and more.
HSM & Security
Non-face-to-face transactions in which the cardholder authorizes the merchant to store card data, and the merchant uses that stored data to carry out the transaction, are called Credential-on-File (CoF) transactions.
Payment Systems
Online PIN is verified by the card-issuing institution through the message itself, while Offline PIN is verified on the chip. This article explains the difference and when PIN bypass is allowed.
Open Banking
First, it is useful to briefly recall the concepts of Banking as a Service and Open Banking. Banking as a Service (BaaS) lets interface developers connect directly to service banks' systems via APIs and open banking services to run banking transactions for customers...
Mobile Payments
TR QR Code is the QR code standard defined by the regulation on generating and using TR QR codes in payment services. FAST – TR QR Code refers to the TR QR Code used for payments made through FAST, built on BKM's infrastructure.
Laws & Regulations
A rule-based method has been adopted for setting the maximum interest rates on credit card transactions, using a reference rate based on banks' weighted average deposit rates plus 55 basis points. This post summarizes the method and the rates effective 1 November 2020.
Credit Card
You start a transaction at an ATM and your card is returned, even though you think nothing is wrong. Here are the response codes usually used in these cases.
Chargeback
A chargeback is the process of requesting that an amount paid by credit card be refunded, either because the goods or services paid for were not received, or because a transaction is identified as one the cardholder did not carry out.