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Security
When you visit a website, the protocol it supports appears at the left of the web address. Secure data transfers likewise use protocols that support http or https. Let's first take a brief look at what HTTP and HTTPS are.
EMV
AID tells the terminal which applications are present on a chip when a transaction is performed via POS/ATM. It is a 5-16 digit value in Tag 9F06, used to identify chip applications by card scheme.
ISO 8583
F23 - CARD SEQUENCE NUMBER: Information used to distinguish cards sharing the same card number. For example, the Card Sequence Number is incremented by 1 when a card is renewed. In an authorization transaction, if the F22 value is '05x'...
Credit Card
A 2-character field written to the card's chip data that increases by 1 with each card renewal, allowing authorization to distinguish between the old and new card. This means that, theoretically, assuming no other conditions prevent it, a...
Fraud
Chargeback is the process of refunding a credit card payment when the goods or services that should have been received were not, or when transactions not made by the cardholder are identified. In Turkish it is translated as reversal of presentment.
Chargeback
A chargeback is the process of refunding an amount back to a credit card when goods or services paid for are not received, or when transactions not carried out by the cardholder are identified. It is translated into Turkish as reverse presentment.
Credit Card
PVV is the number encoded on a card's magnetic stripe that allows the cardholder's PIN to be verified by ATMs and POS terminals. It is a 4-digit cryptogram calculated through a cryptographic operation using the PIN and card data. The real result is longer than 4 digits.
Merchant & POS
Digitalization has brought major change to payment systems, just as it has to every area of our lives. Its biggest impact has been turning the financial world into something virtual, spanning IoT, mobile payments, blockchain and biometrics.
Merchant & POS
In the world of payment systems, there are new developments every day in both accepting payments and payment methods. QR code payments will undoubtedly become more common in the coming days, and we will make payments with QR codes in many places.
Payment Systems
Official Gazette No. 32332 dated 07.10.2023 published the amending Regulation and Communiqué covering digital wallets, e-money, share transfers, cloud outsourcing, remote identity verification and card system choice.
Chargeback
A chargeback is a dispute raised against a card transaction when the cardholder did not make it or does not recall it. The dispute types vary depending on the situation; let's look at them.
Merchant & POS
Loading parameters onto a POS transfers BIN lists, key data, and refund/cancellation authorizations from the management system onto the terminal. Learn how and when it happens.