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Illustration of a person-to-person (P2P) mobile payment transfer

Credit Card

What is Person-to-Person Payment (P2P)?

Person-to-person payments (P2P) is an online technology that lets users transfer money from their bank or credit card accounts to another person's account over the internet or a mobile phone. Examples of such apps include PayPal, Venmo, and Cash App.

Illustration representing real-time and near real-time fraud monitoring in payment systems

Fraud

What is Online (Real Time) and Near Online (Near Real Time) Fraud?

Fraud monitoring refers to tracking card transactions through scenarios to detect potential fraud and taking rapid action immediately before or after a transaction occurs - such as identifying a suspicious transaction, calling the customer, or temporarily blocking the card to prevent authorization.

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.

POS terminal device used for processing card transactions

Online & Authorization

Response Codes That Can Be Received in Offline Transactions

Below are the possible response code values for offline transactions and their explanations: Response Code / Explanation - Y1: Approved offline, Z1: Declined offline, Y2: Approved after referral, and more.

Illustration of a 3D Secure payment verification screen

Merchant & POS

What is a 3D Secure transaction?

In e-commerce transactions, the system developed to increase transaction security for payments made with credit and debit cards is called 3D Secure. When paying with 3D Secure, a special payment screen provided by the banks appears on the user's screen.

GO Secure Payment logo

Merchant & POS

What Is Secure Payment (GO)?

GO Secure Payment is a system developed by BKM that verifies cardholders using a one-time password (OTP) during online purchases made with TROY cards, providing banks with a secure verification platform without needing to store card data.

Exterior of the Takasbank headquarters building

Payment Systems

What is Takasbank?

Takasbank (Istanbul Settlement and Custody Bank) exists to increase the competitiveness of Turkey's markets by providing clearing and custody services, financial services, and other economic activities under the relevant legislation.

UnionPay logo

Payment System Institutions

What is the UnionPay Online Payment System (UPOP)?

UnionPay Online Payments (UPOP) lets merchants in China, New Zealand, Australia and other countries extend their e-commerce stores to accept UnionPay payments. UnionPay supports over 5 billion cards in more than 140 countries.

Architecture diagram of the Visa EAS Server within the Visa Secure 3-D Secure authentication flow

EMV

What Is the Visa EAS Server?

The Visa EAS Server (Extended Access Service) is a server used in Visa’s authentication infrastructure. It was developed to run the cardholder authentication process securely between banks and the Visa network, particularly within Visa Secure (3-D Secure 2.x).