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Photo of a Pin Entry Device (PIN pad) used for card payments

Merchant & POS

What is a Pin Entry Device (PED)?

Pin Entry Device is another name for the PIN pad device we all know and use daily. It makes it easier for users to enter their card PIN during POS transactions with credit or debit cards, and is used for contactless card reading...

Table of ISO 8583 response codes that trigger card capture

Merchant & POS

What Are the Card Capture Error Codes?

Response codes returned on payment transactions are critical for managing next steps. Curious which error codes trigger card capture? Under ISO 8583, codes 04, 07, 33, 34, 36, 38, 41 and 43 all result in the card being captured.

Mobile phone used to accept payments through the Secure Mobile Payment System

Merchant & POS

What Is Secure Mobile Payment?

The Secure Mobile Payment System is a system permitted by the Ministry, operated under the Revenue Administration (GIB) Communiqué, for sales, payment and collection transactions and the electronic creation, transmission and retention of the related financial documents.

Illustration showing a margin added to a foreign currency exchange rate

Merchant & POS

What Is a Marked-Up Exchange Rate?

In payment systems, exchange rate information is used in two places: POS devices that support foreign currency transactions, and credit card transactions made in a foreign currency (usually abroad).

Illustration representing the advantages and disadvantages of credit cards

Credit Card

What Are the Advantages and Disadvantages of a Credit Card?

Credit cards can be a convenient way to manage income and expenses, but for those who don't know how to use them, they can become an expensive and risky product. Here are the key pros and cons to weigh before applying for one.

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.

Table of Reimbursement Attribute values used in the clearing process

Clearing

What is Reimbursement Attribute?

DE03/Reimbursement Attribute carries the Reimbursement Value of a transaction. BKM uses this information as the basis for calculating interchange fees and charges between member banks.

Credit card statement showing an unrecognized transaction

Credit Card

Is Your Card Making Purchases Without Your Knowledge?

While reviewing your credit card statement, you suddenly notice a transaction you never made. What would you think? Is your card going shopping while you sleep? Let's look at how this can happen and what to do about it.

POS terminal performing a contactless card payment

Contactless

Can I make a 1,000 TL contactless transaction?

Updated info: this article describes the limit at the time it was published. For the current contactless (PIN-free) transaction limit, see the linked article. A 1,000 TL contactless transaction is technically possible, but banks won't take that risk.

Example of a combo card showing credit card information on the front and debit card information on the back

Credit Card

What is a combo card?

A combo card is a next-generation card that combines both a credit card and a debit card on a single card. Although designs vary visually, the front typically carries the credit card information and the back the debit card information.

Illustration representing a bank checking a merchant against the termination list before issuing a POS device

Merchant & POS

What Is a Merchant Termination List Check?

The termination list is a list, fed by all banks, containing merchants whose merchant agreements have been terminated by banks, together with the reasons for termination. This list is maintained by BKM and offered to banks as a service. Merchants request…