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Illustration of personal data protection under the Turkish Personal Data Protection Law (KVKK)

Merchant & POS

What is the Personal Data Protection Law (KVKK)?

The Personal Data Protection Law was adopted by the Grand National Assembly of Turkey on 24/03/2016 and published in Official Gazette No. 29677 on 07/04/2016. It protects individuals' rights in the processing of personal data and sets the rules that data controllers must follow.

Example of RRN printed on a POS receipt used to trace ISO 8583 transactions

ISO 8583

ISO 8583 Field Descriptions (F37)

F37 - RETRIEVAL REFERENCE NUMBER: a 12-digit alphanumeric value generated by the Acquirer that initiates the transaction. It must be printed on the POS receipt or ATM slip. RRN is the reference number that allows a transaction to be located.

Prepaid debit card not linked to a bank account

Debit Card

What Is a Prepaid Debit Card?

A prepaid card is a customized card that is not linked to a bank account and has no credit limit like a credit card - you can spend only up to the amount loaded onto it. Prepaid cards function just like a bank card or credit card.

Diagram comparing the three levels of payment-card tokenization: static, semi-dynamic and dynamic

HCE

What Are the Levels of Tokenization?

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.

BKM API BIN list update illustration

Payment System Institutions

What Is the BKM API?

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.

Screenshot illustrating a prepaid card and its features

Credit Card

What is a prepaid card?

A prepaid card is a customized card, with or without a chip, not linked to a bank account and without a credit limit like credit cards, letting you spend only the amount loaded onto it.

Secure card storage and tokenization illustration

Merchant & POS

What Is Card Storage?

Card storage is a system, secured with PCI DSS certification, for storing credit and debit card details safely. It saves consumers from entering their card details again and again on frequent purchases.

Photo of a prepaid card used for everyday purchases

Credit Card

What should you know before buying a prepaid card?

A prepaid card is a customized chip or chipless card that is not linked to a bank account and has no credit limit like a credit card. You can only spend up to the amount loaded onto the card.

Table showing prepaid card loading, spending and cash withdrawal limits

Prepaid Cards

What Are the Transaction Limits for Anonymous Prepaid Cards?

Prepaid cards are among the most popular cards right now, and their use keeps growing. A prepaid card is not linked to a bank account, has no credit limit like a credit card, and can be used up to the amount loaded onto it.

A POS terminal screen for changing the batch number

Merchant & POS

How to Change the POS Batch Number

The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.

Illustration representing a POS batch number counter

Merchant & POS

What Is a Batch Number?

The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.