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Credit Card
DCI (Debit/Credit Indicator) is a flag that shows whether a transaction was made with a credit card or a debit card. With the arrival of prepaid cards, it began to be used as DCPI (Debit/Credit/Prepaid Indicator). Is DCI sent in the authorization message?
Credit Card
First, let's briefly explain CVV/CVC. CVV stands for Card Verification Value, a term used for Visa. CVC stands for Card Verification Code, a term used for MasterCard. The CVV/CVC code is used for cardholder verification and to reduce fraud risk.
Security
An external network scan run every 3 months by an Approved Scanning Vendor authorized by card schemes such as MasterCard and Visa, required for PCI DSS compliance. It checks whether merchant systems are protected against external threats.
ISO 8583
F2 is the Card Number field in ISO 8583, identifying the cardholder and issuing bank. This post covers its structure, the 8-digit BIN update, field format, first-digit scheme identification, and PCI DSS security requirements.
Merchant & POS
For a POS device to process a transaction with a card issued under a payment scheme such as MasterCard or Visa, the device must complete the required certifications for that scheme. First, the acquiring bank must clarify several points before entering certification.
Credit Card
Major Industry Identifier (MII) is the first digit of a credit card number, representing the category of the institution that issued the card. The MII values and their corresponding categories are listed below.
Credit Card
Yes. American Express cards have a 4-digit CVV on the front and a 3-digit CVV on the back, like other cards. Here's how payment forms should handle both formats and why logging the security code is never allowed.
Credit Card
TROY, announced by the Interbank Card Center (BKM) in September 2015, is a card scheme like VISA, MasterCard, or AMEX. It takes its name from the initials of its Turkish slogan meaning 'Turkey's Payment Method'.
Credit Card
A prepaid card may look like a debit card since it has no predetermined limit and purchases are limited to the amount loaded by the cardholder, but in terms of use and operating logic it differs significantly from both credit and debit cards.
Credit Card
About 90% of payment schemes print card numbers with 16 digits. But 90% producing 16-digit cards should not turn into a rule that card numbers are always 16 digits. Web payment forms must also account for the remaining 10%.
EMV
RID is part of the AID value, which is structured according to ISO/IEC 7816-5 and consists of two sections: a value specific to the application provider, and an optional field used to identify different providers or products.
Credit Card
A structure developed by Visa for purchase refund transactions. The purchase return authorization message lets cardholders view their refund transactions in real time, improving the customer refund experience.