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Illustration explaining the authorization process for card payments at POS, virtual POS, and ATM terminals

Merchant & POS

What is Authorization?

The term 'provizyon' comes from French and means obtaining approval for a transaction. In payment systems, authorization confirms that the card, POS, bank account, and transaction limits are sufficient to complete a payment.

Illustration of the internal cash tower unit inside an ATM

Payment Systems

What is a tower?

In payment systems, the tower is the section inside an ATM where cash is physically stored. It contains cassettes holding different banknote denominations, a mix cassette for mismatched notes, and various security mechanisms protecting the cash.

Warning illustration about a fake social media gift points scam targeting card details

Credit Card

Congratulations, You Won Gift Points..

A real attempted card fraud story: a fake Facebook friend request, a promise of free bank points, and a request for card number, expiry date and CVV2. Here is what happened and how to protect yourself.

Merchant and bank settlement process for POS transactions

Merchant & POS

How do banks work with merchants?

After a merchant applies to a bank and the required checks on the company are completed, a POS is connected to the customer. Settlement can be commission-based, held for a period, or both, depending on the agreement.

Old mechanical credit card imprinter machine used to transfer embossed card details onto a sales slip

Merchant & POS

What Is an Imprinter?

An imprinter is the name given to devices that transfer all the information embossed on a credit card onto a paper sales receipt. Before POS terminals, it was commonly used by merchants for authorization transactions.

Illustration representing legal and administrative collection processes for unpaid credit card debt

Credit Card

What Are Legal Collection and Administrative Collection?

For people who have trouble paying credit card debt, who do not pay, or who pay late, the concepts of legal collection and administrative collection are not unfamiliar. So, what are legal collection and administrative collection? After a statement is issued on the card,…

Diagram illustrating the structure of an ISO 8583 message field

ISO 8583

ISO 8583 Field Descriptions (F14)

F14 - DATE, EXPIRATION DATE: the expiration date printed on the card by the issuing bank, a 4-digit numeric value in YYMM format. See how it's checked and why the YYMM order matters.

Diagram illustrating clearing and settlement in payment systems

Clearing

What Are Clearing and Settlement?

Clearing: the transmission of transfer orders sent to the system, mediating their mutual delivery, obtaining authorization prior to settlement in some systems, and netting payment orders.

ATM machine with card reader, keypad and screen

ATM

15 Interesting Facts About ATMs

Although we can now carry out almost all branch transactions at an ATM, for most of us an ATM is still just a machine for depositing and withdrawing cash. Today, without a card, we can use our phones to deposit and withdraw cash via QR code.

Credit card reward points campaign expiry illustration

Credit Card

How Should We Approach Time-Limited Campaigns? (2)

Ali joined a bank's “shop 4 times at merchant X and earn Y TL” campaign. Fifteen days after being told 40 TL had been loaded onto his card, the merchant told him he had no points left. Here is what went wrong.

Diagram illustrating the soft chargeback retrieval request process between cardholder, issuer and merchant

Chargeback

What Is a Soft Chargeback?

A soft chargeback, also called a retrieval request, is a request for documents about a transaction the cardholder does not recognize. Learn why customers request them, what information merchants should provide, and why a fast response matters.