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Credit Card
This communiqué sets the rules for managing information systems used in bank card and credit card transactions. Card scheme operators, issuers, acquirers, merchants and outsourced service providers are all within its scope.
HSM & Security
TMK stands for Terminal Master Key, a key-encrypting key distributed manually or automatically under a previously established TMK. It is used to distribute data encryption keys to an ATM or POS terminal within a local network.
Merchant & POS
E-Commerce can briefly be described as the sale and purchase of products over the internet, a term used since 1969. Virtual POS operates behind e-commerce transactions, which take place at different levels: Non 3D, Half 3D, and Full 3D Secure.
Merchant & POS
It's important to first distinguish between magnetic-stripe and fallback transactions. A magnetic-stripe transaction skips the chip entirely, which lowers its security level compared to a fallback transaction.
Clearing
DE03/Reimbursement Attribute carries the Reimbursement Value of a transaction. BKM uses this information as the basis for calculating interchange fees and charges between member banks.
Merchant & POS
In EMV-based debit card transactions, PIN verification is decisive for both security and liability. What happens when a card that only supports online PIN is sent to the issuer without a PIN, and the issuer approves it? Who owns the risk?
HCE
An international standard that defines proximity cards used in Near Field Communication (NFC) and the protocols used to communicate with them. It has 4 parts; Part 4 covers NFC and HCE operations.
Payment Systems
When we hear “payment systems”, card transactions at POS terminals or ATMs usually come to mind. Let's look together at the payment systems recognized by the Central Bank.
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.
Credit 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.
Credit Card
What is a card expiration date? Learn why banks print this date on every card, how it's used in purchases, and what happens once it passes.
Payment Institutions & E-Money
On 7 October 2023, the CBRT amended the Communiqué on Information Systems of Payment and E-Money Institutions and Data Sharing Services of Payment Service Providers, first published on 1 December 2021. Links to the new text, a comparison table and a detailed summary of changes follow.