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Diagram of the EMV Card Block command process

EMV

What is the Card Block command?

The Card Block command is used after card issuance to deactivate all applications within the ICC, including applications that could be selected indirectly. The components of the command are explained below.

Affinity credit card with club logo illustration

Credit Card

What is an Affinity Card (Membership Card)?

An affinity card is a type of credit card issued by a bank that carries the logo of a social organization such as an association, foundation, sports club, or charity (for example, Fenerbahce Bonus). It is similar in structure to a co-branded card.

Smart Payment Association (SPA) logo

Payment Systems

What is SPA (Smart Payment Association)?

The Smart Payment Association (SPA) is the trade association of the smart payments industry. It provides leadership and expert guidance to help members and customers realize smart, secure and personalized payment systems and services, now and in the future.

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.

Diagram illustrating the Card Verification Key (CVK) concept

Credit Card

What is CVK (Card Verification Key)?

CVK (Card Verification Key) is the key information used to generate and verify CVV/CVC values, confirming their validity. It is kept as a pair of keys, CVK A and CVK B, encrypted under TMK, ZMK or LMK.