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Credit Card
While reviewing your credit card statement, you suddenly notice a transaction you never made. What would you think? Is your card going shopping while you sleep? Let's look at how this can happen and what to do about it.
EMV
DFN is the abbreviation for Dedicated File Name. It defines the name of the DF (Dedicated File) as described in ISO/IEC 7816-4. It is the data found in Tag 84, 5 to 16 characters in length.
Merchant & POS
The Upper Consecutive Offline Limit is the maximum number of consecutive offline transactions allowed by the issuer's chip card application on a terminal that cannot go online. It is held in tag 9F23.
Credit Card
Yes. A certificate must be generated for every new BIN and loaded onto the card chip, establishing secure communication between the chip and the terminal. This is especially critical for verification in offline transactions.
Credit Card
When payment systems come to mind, credit cards are usually the first thing people think of. Credit cards are produced according to specific standards, both in visual design and during printing. These standards belong to the ISO/IEC 781X family.
EMV
EMV standards form the foundation for chip cards to work on terminals worldwide, but each scheme - VSDC (Visa), M/Chip (Mastercard), AEIPS (Amex), J Smart (JCB), D-PAS (Discover), and UICS (UnionPay) - defines its own keys, rules, and card profiles.
Merchant & POS
Introduction: When a card (credit card/debit card/prepaid card) is used at an ATM or POS, data must be carried securely between systems. For example, in a store sale, the POS initiates the transaction, which must reach the cardholder's bank intact.
Credit Card
Application Preferred Name is an optional alphanumeric EMV data element of 1–16 characters, sent in tag 9F12. It is stored on the card and gives the card application a more descriptive name than the Application Label.
Online & Authorization
The Application Transaction Counter is the number of transactions made with the card so far. It increases by 1 with each transaction and can also be used as a transaction number, making transactions easier to track.
Fraud
With the growth of credit and debit card usage and rising e-commerce transaction volumes, there has been a serious increase in exploiting user negligence to harm customers. Fraud means using someone else's card at a merchant or ATM to gain unjust profit.
Merchant & POS
These are codes placed into the terminal software by the acquirer that govern the rules for whether transactions go online or are declined, covering offline approval, offline decline, and online submission due to issuer risk...
Merchant & POS
MPV stands for Merkezi POS Veritabanı (Central POS Database), BKM's shared database of all POS terminals operated by its card-accepting members, used for support, statistics, fraud analysis and the Common POS Management System.