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"ATM operations"

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Photo of the Central Bank letter asking banks not to load 200 TL banknotes into ATMs

ATM

Is It Forbidden to Load 200 TL Notes into ATMs?

In a letter to banks as part of the fight against inflation, the CBRT asked them to stock small-denomination banknotes in ATMs instead of 200 TL notes. Is this a ban or a recommendation, and what are the operational consequences for ATMs and banks?

Diagram illustrating a co-badge card issued under two payment schemes

Credit Card

What is a Co-Badge Card?

A co-badge card is issued under two or more payment schemes (Mastercard, Troy, Diners Club, Discover, etc.). If a bank's product supports multiple schemes, customers can request a card carrying two or more payment brands.

Screenshot of a mobile banking app showing the QR code deposit flow at an ATM

ATM

Depositing Money with a QR Code

Many banks now let customers deposit cash by scanning a QR code with their mobile banking app instead of inserting a card at the ATM. This speeds up the transaction, reduces card skimming risk, and adds an extra layer of security through in-app verification.

News clipping about the arrest of hacker Hakan Karacaoglu

Fraud

Famous Hacker Caught After 8 Years

Recently the following news story appeared in the papers. Two things stood out: the hacker was a former banker, and the device he used to clone cards. In banking fraud, insiders who know the system's weak points can build schemes customers never notice.

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.

Diagram illustrating how bank fraud detection systems analyze transactions

Fraud

How Do Fraud Applications Work?

Fraud management is used to detect possible fraud on customer accounts and provides additional security for transactions when necessary, making it one of the top priorities for banks.

Diagram showing different types of POS terminals used for card payments

Merchant & POS

What Is a POS (Point of Sale)?

Virtual or electronic authorization devices connected to a bank, used by merchants to accept card payments. The term comes from the English phrase Point of Sale. Covers POS types by communication method, their advantages, who can use one, and the transactions a POS can perform.

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.

UnionPay logo

Merchant & POS

What Is UnionPay?

UnionPay International (UPI) is a China UnionPay subsidiary founded in November 2012. Together with more than 1,000 institutions worldwide, UPI provides international card acceptance in 160 countries and card issuance in more than 40 countries and regions.

Diagram of ISO/IEC card standards defining credit card dimensions and layout

Credit Card

Standards that define credit card design and operation

When payment systems come to mind, credit cards are usually the first thing people think of. Credit cards are produced according to specific standards, both in visual design and during printing. These standards belong to the ISO/IEC 781X family.