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Illustration representing the Mir payment card scheme

Merchant & POS

2 Turkish Banks Agreed to Accept the Mir Payment System

In Turkey, there are 3 payment schemes we are used to seeing: MasterCard, Visa, and Troy. American Express and Diners Club are also used, though less widely. Russia's Central Bank recently said two Turkish banks are preparing to accept Mir cards.

Computer-based social engineering attack illustration

Security

What Is Computer- and Technology-Based Social Engineering?

Social engineering is the art of obtaining information people should normally keep private by exploiting the human factor. In its computer- and technology-based form, the information is obtained through technology.

Illustration showing the reasons a bank may terminate a merchant agreement

Merchant & POS

Under What Circumstances Is a Merchant Agreement Terminated?

Banks check merchants against a termination list before issuing a POS device. Learn the main reasons, such as counterfeit card acceptance, excessive chargebacks, and fraud, that can lead a bank to terminate a merchant agreement.

Diagram of the EMV Card Block command process

EMV

What is the Card Block command?

The Card Block command is used after card issuance to deactivate all applications within the ICC, including applications that could be selected indirectly. The components of the command are explained below.

EMV application block command

EMV

What Is the Application Block Command?

The Application Block command is sent to invalidate the selected application on a card after the card has been issued. Unlike Card Block, it can be reversed.

Illustration of a multicurrency POS terminal supporting multiple foreign currencies

Merchant & POS

What Is a MultiCurrency POS?

Multicurrency POS refers to POS devices that can process transactions in foreign currencies (USD, EUR, GBP, etc.) in addition to Turkish Lira. Merchants using a MultiCurrency POS can process transactions in different currencies for international cardholders.

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…

Example of a POS transaction receipt (slip)

Merchant & POS

Don't Dismiss the POS Receipt

In daily credit card purchases, the POS produces two receipts: the Customer Copy and the Merchant Copy. The cardholder gets the customer copy; the merchant keeps its own copy by law.

Mastercard logo with interlocking red and yellow circles and no brand name below it

Credit Card

Why did Mastercard change its logo?

It is common for logos to include the brand's name. However, many major brands that shape their industries use only their own symbol, without any name. Apple, Nike, and Target are examples of category leaders who rely solely on their logo.

POS terminal used for card payment transactions

Merchant & POS

What is On-Us Leakage?

On-Us Leakage is a term used in the world of payment systems. On-us means the card-issuing bank and the POS-acquiring bank are the same. So what does on-us leakage mean in this context?