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"Banking Operations"

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Diagram of an e-money institution and the services it can provide under Law No. 6493

Payment Institutions & E-Money

What Is an E-Money Institution? Which Services Can It Provide Under Law No. 6493?

The Law defines e-money as monetary value issued in exchange for funds accepted by the issuer, stored electronically, used for payment transactions and accepted as a payment instrument by persons other than the issuer. This post explains e-money institutions and the services they may provide.

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.

Illustration of a contactless payment card being tapped on a POS terminal

Contactless

What is Magnetic Stripe Data (MSD)?

As end users, we have come to love contactless payments, which are becoming a bigger part of daily life. So what features let contactless cards make payments without touching the POS terminal? There are two classes: MSD cards and Contactless EMV cards.

ISO 8583 field 19 acquiring institution country code

ISO 8583

ISO 8583 Field Descriptions (F19)

F19 — Acquiring Institution Country Code: the country to which the location of the acquiring bank's device (ATM, POS, etc.) belongs.

Conceptual illustration of AI agents engaging in online commerce and payments

Agentic Commerce

Agentic Commerce Series – Part 1

The next customer on the internet may not be human. If AI agents become part of purchasing decisions, the rules of e-commerce, marketing, and payment systems could change.

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.

Screenshot of the Official Gazette announcing Law No. 7192 on payment and securities settlement systems

Laws & Regulations

What Is Law No. 7192 and What Does It Include?

Law No. 7192 amends certain articles of Law No. 6493 on Payment and Securities Settlement Systems, Payment Services and Electronic Money Institutions. Announced on 22 November 2019, it entered into force on 01.01.2020.

Payment terminal running multiple bank applications as a shared POS

Payment Systems

What is a shared POS? Key points for projects and testing

A shared POS is a bank or institution terminal that can host more than one application. This post covers the software, APN and authorization steps, and the key test scenarios to cover in a shared POS project.

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 illustrating how a Payment Facilitator connects merchants to banks for card payments

Merchant & POS

What Is a Payment Facilitator (PF)?

A Payment Facilitator (PF) is a licensed payment institution that lets merchants accept card payments without applying to banks directly. Learn how it works.