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Istanbulkart transit and payment card

Credit Card

Istanbulkart: Both Transit Card and Payment Card

When I think back to the Akbil I used when I first arrived in Istanbul, I think it's fair to say that Istanbulkart has undergone a very significant transformation. Users can now track activity, top up and view balances right from their phones.

Mifare contactless smart card

Debit Card

What is a Mifare Card?

A type of smart card containing a microchip and simple software, which performs contactless reading when brought close to a smart card reader. It isn't linked to a bank account and has no credit limit like credit cards. You can spend up to the amount loaded onto the card...

Illustration representing Merchant Category Code classification for card transactions

Merchant & POS

What Does a Restricted/Prohibited MCC Mean?

The MCC code, or Merchant Category Code, is a 4-digit code used to classify merchants. Some MCC codes are restricted or prohibited, and POS terminals or card transactions may be blocked when such a code is used.

Diagram showing the structure of an ISO 8583 message

ISO 8583

What Fields Make Up ISO 8583?

We covered the ISO 8583 basics in an earlier article. This post explains the ISO 8583 message structure in detail: every ISO 8583 message consists of three main parts - the MTI (Message Type Indicator), the Bitmap, and the Data Elements.

Diagram of the committees within the BKM system

Payment System Institutions

What are the committees in the BKM system?

BKM (Interbank Card Center) works through several committees: Security, Operations and Technology, Market Development, Business Development, Chargeback Rules and Arbitration, ATM Sharing, plus arbitration committees. This post outlines each one's duties.

Apple Card and Apple Pay announcement graphic from Apple's Special Event

Credit Card

Apple Is Rewriting the Card World...

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...

POS terminal device used for processing card payments

Merchant & POS

What is MIV (Central Merchant Database)?

MIV stands for Central Merchant Database. The MIV Module collects information on merchants across Turkey and the TRNC that have card acceptance agreements with BKM members, and assigns each merchant a unique number for tracking purposes.

Conceptual illustration of a brain-computer interface chip connected to a human brain

Payment Systems

What Could Neuralink Change in Payment Systems?

Elon Musk was set to unveil Neuralink, a brain-computer interface. What is Neuralink, and how might payment systems change if payments, cards, ATMs and POS devices move from phones to a chip in the brain?

EMV application block command

EMV

What Is the Application Block Command?

The Application Block command is sent to invalidate the selected application on a card after the card has been issued. Unlike Card Block, it can be reversed.