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Illustration of dynamic CVM limit management for contactless card payments

Payment Systems

Dynamic CVM Limit Management Approach: A New Era in Card Security

One of the most notable recent developments in card payments is that contactless limits are no longer fixed and can be managed dynamically per customer. Mastercard and Visa are taking different but complementary approaches, and ISO 8583 may need to evolve with them.

Illustration representing communication protocols used in POS payment systems

Merchant & POS

What Are POS Sub-Protocols and Their Use Cases in Turkey?

In payment systems, every exchange between POS devices and bank or payment institution systems runs on a specific messaging standard, generally based on ISO 8583. However, each country, bank, or switch network defines its own version of this standard.

Diagram illustrating the ISO 8583 F42 card acceptor identification code field

ISO 8583

ISO 8583 Field Descriptions (F42)

F42 - CARD ACCEPTOR IDENTIFICATION CODE: the merchant number of the terminal where a transaction took place. It is a 15-character alphanumeric value. Transactions are settled to the merchant's account based on the merchant number in this field.

Diagram illustrating how financing companies operate in Turkey

Payment System Institutions

What Are the Financing Companies Operating in Turkey?

These are credit institutions providing financing to individuals and companies for purchasing goods and services. Financing companies specialize mainly in vehicle loans, offering fast and flexible point-of-sale solutions distinct from banks.

BKM TRIP platform login screen for bank fraud and chargeback communication

Chargeback

What is TRIP (Turkey's Communication Platform)?

TRIP (Turkey's Communication Platform) is a central platform developed by BKM to fight fraud, bringing together Case Filing, Issuer and Acquirer Chargeback operations (Pre-Arbitration, Pre-Compliance, Arbitration, Compliance), and ATM deposit/payment dispute operations.

Illustration of a Card Not Present (CNP) online payment transaction

Credit Card

What Is a CNP (Card Not Present) Transaction?

CNP refers to a transaction made through a website or a company's own app payment page, where the card is not read by any device and its details are entered manually. It is short for Card Not Present.

Illustration for a glossary of cryptocurrency terms such as Bitcoin, blockchain and mining

Cryptocurrency

What Are the Terms Used in the Cryptocurrency World?

Cryptocurrencies are becoming part of everyday life and are expected to compete seriously with card payments. This glossary explains the key crypto terms, from address, altcoin and arbitrage to halving, mining, proof of stake and stop-loss.

Illustration representing credit information sharing among institutions in the Credit Reference System (KRS)

Credit Card

What Is KRS (Credit Reference System)?

The Credit Reference System (KRS) is an information sharing system that, using modern methods, enables detailed information about individual credit product customers to be shared among KKB member institutions, in order to determine the risk factor…