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Illustration representing a foreign currency POS transaction

Payment Systems

What is Foreign Currency POS? What are the key points?

Foreign Currency POS is the POS software that lets merchants process transactions in a foreign currency. Terminals without it can only collect payments in Turkish lira. It comes in two common forms: Multicurrency POS and DCC POS (Dynamic Currency Conversion).

Diagram showing the BKM TechPOS merchant and POS management infrastructure

Merchant & POS

Is BKM TechPOS Advantageous?

BKM TechPOS is a merchant and POS management infrastructure provided by BKM. Banks need to allocate physical/virtual/ECR POS terminals to merchants in order to establish a merchant relationship with their corporate or sole-proprietor customers.

TreeCard wooden bank card made from sustainably sourced cherry wood

Credit Card

Can a card be made from wood?

While the use of physical cards and POS terminals is gradually declining, positive developments continue, such as the world's first wooden card, TreeCard, backed by the search engine Ecosia and aimed at reforesting the world.

Diagram illustrating how netting works between two banks in the clearing system

Clearing

What Is Netting in the Clearing System?

In payment systems, a transaction made at a merchant or ATM with a card issued by a different bank becomes subject to clearing. Netting offsets each participant's receivables and payables from these transactions into a single balance.

Illustration representing a fictitious POS transaction

Fraud

What Is a Fictitious Transaction?

According to the Banks Association of Turkey, a fictitious transaction is a collusive transaction made by misusing POS devices, debit cards, or credit cards. Banks that detect such transactions through merchants report them to the Banks Association of Turkey.

Close-up of a bank card's chip failing to be read by a POS terminal

Credit Card

What should I do if my card's chip isn't reading?

If your card's chip won't read, the chip data is likely corrupted or the POS's chip reader is faulty. This is usually caused by magnetic interaction with another card's chip.

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.

Illustration of POS terminal certification testing for Visa and MasterCard payment schemes

Merchant & POS

What are Visa ADVT & VpTT and MasterCard M-TIP?

In order for a bank's POS devices to process transactions with payment scheme cards (Visa, MasterCard, Troy, etc.), they must pass certain test and control steps. Visa and MasterCard have test tools that include test cards and test scenarios for this purpose…

Diagram explaining ISO 8583 field 11 (STAN)

ISO 8583

ISO 8583 Field Descriptions (F11)

DE 11 - SYSTEMS TRACE AUDIT NUMBER: A 6-digit unique numeric value generated by the message originator, enabling unique tracking of the transaction. How is STAN generated?

Diagram of a smartphone using Magnetic Secure Transmission (MST) to emit a signal that mimics a card's magnetic stripe at a POS terminal

Merchant & POS

What is MST (Magnetic Secure Transmission)?

Magnetic Secure Transmission (MST) is a mobile payment technology in which devices such as smartphones emit a signal that mimics the magnetic stripe on a traditional payment card, letting a physical card's POS use be imitated without upgrading terminal software or hardware.

Diagram illustrating how the Termination Tracking System (FTS) works

Payment Systems

What Is FTS (Termination Tracking System)?

FTS (Termination Tracking System) lets banks check, before signing a merchant agreement, whether the applicant company or its representative has a negative history with any bank.