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Credit Card
The following steps should be followed when launching a new product: decide on the brand, request a new BIN from the scheme (Mastercard, Visa, Troy), define the BIN in the bank's system, generate keys in the HSM, and roll it out after certification.
Merchant & POS
Loading parameters onto a POS transfers BIN lists, key data, and refund/cancellation authorizations from the management system onto the terminal. Learn how and when it happens.
Payment System Institutions
Thanks to the API developed by BKM, BKM Express member merchants can automatically update the BIN lists of cards issued by all banks in Türkiye and offer installments and reward points more efficiently.
ISO 8583
F2 is the Card Number field in ISO 8583, identifying the cardholder and issuing bank. This post covers its structure, the 8-digit BIN update, field format, first-digit scheme identification, and PCI DSS security requirements.
Merchant & POS
The most important part of issuer data definitions is that they are built around your own bank's or institution's developments and application flows. Missing BINs can break installments, rewards and routing on POS devices.
Credit Card
Payment systems statistics are reported periodically by the Interbank Card Center (BKM), including total card count, total card turnover, and the growth trend of the card world in the period.
Credit Card
DCI (Debit/Credit Indicator) is a flag that shows whether a transaction was made with a credit card or a debit card. With the arrival of prepaid cards, it began to be used as DCPI (Debit/Credit/Prepaid Indicator). Is DCI sent in the authorization message?
Credit Card
Most of us remember the impact the first iPhone, introduced by Steve Jobs on January 9, 2007 and revolutionary for its time, had on our lives. In a similar way, a product that will completely change how we use and view credit cards...
ATM
During an ATM withdrawal, once all checks are complete and the decision to give the money is made, the cash becomes ready to be presented. The distinction matters for whether notes go to the retract or reject bin.
Merchant & POS
Today, credit cards play an important role in our daily lives. We can carry out almost all of our transactions without carrying cash, using our credit card instead. During a purchase, we hand our card to the cashier and enter our PIN at the POS terminal.
Credit Card
Visa, Mastercard, and TROY logos on a card represent the payment scheme behind it. Learn what these brands actually do and how a new BIN gets certified.
Payment Systems
A shared POS is a bank or institution terminal that can host more than one application. This post covers the software, APN and authorization steps, and the key test scenarios to cover in a shared POS project.