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Merchant & POS
Cashback is a modern POS terminal service that allows cash to be withdrawn from the merchant's till while paying for goods and services. Although cashback is a feature specific to debit cards, you can also withdraw cash from an ATM...
Online & Authorization
Cardholder verification in EMV is specific to chip cards. One goal of EMV is to minimize card fraud. To do this, three parties must be verified: the bank, the cardholder, and the terminal. One of the data items taken from the card to prove identity is...
Merchant & POS
AUC (Application Usage Control) specifies restrictions that limit an application by geography or by specific transaction types. It is a 2-byte data element in Tag 9F07. If present, the terminal performs checks such as whether the transaction is at an ATM.
Credit Card
The service code is information printed on a card's Track 1 and Track 2 data, covering card type, PIN usage, and domestic/international usage status. It is kept at the product level in bank systems.
Online & Authorization
A reference guide to authorization response codes seen on POS and ATM transactions, with plain-language explanations of what each code means and what to do about it.