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Online & Authorization
In EMV, data is stored in Tag-Length-Value (TLV) format, and it is carried between the card, the POS terminal, and the authorization system in this same format. This post lists every EMV Tag, its type, and its description.
Merchant & POS
When any sole proprietorship or commercial business applies to become a merchant, banks install a POS device, paying significant amounts to purchase each one, then rent the devices to merchants.
Merchant & POS
Contains the terminal-resident data objects (tags and lengths) that the ICC needs when processing the GET PROCESSING OPTIONS command. In short, it is the list of information the card requests from the terminal before starting the transaction.
Merchant & POS
In order for a bank's POS devices to process transactions with payment scheme cards (Visa, MasterCard, Troy, etc.), they must pass certain test and control steps. Visa and MasterCard have test tools that include test cards and test scenarios for this purpose…
Credit Card
A co-badge card is issued under two or more payment schemes (Mastercard, Troy, Diners Club, Discover, etc.). If a bank's product supports multiple schemes, customers can request a card carrying two or more payment brands.
Payment Systems
TCR stands for Transaction Record Component, the packets that carry transaction information in a clearing system. Transaction types in a clearing file are distinguished by transaction code and usage code values, and this data is sent inside TCR packets.
ATM
RKL is the process of distributing a TMK (Terminal Master Key) to each terminal from a central point. It is used to remotely load keys onto POS and ATM devices, loading TMKs onto an ATM's keypad or activating them on a POS.
Credit Card
The Application Interchange Profile indicates the application functions supported by the card. The AIP values and their descriptions are given below. Where is the AIP found? The AIP is a 2-byte piece of data stored on the card, carried under EMV tag 82.
Merchant & POS
The floor limit is the value held on the POS that determines the maximum amount for which an offline transaction can be approved. It is managed per terminal and can be updated at any time through the POS parameter management system.
Merchant & POS
In EMV-based debit card transactions, PIN verification is decisive for both security and liability. What happens when a card that only supports online PIN is sent to the issuer without a PIN, and the issuer approves it? Who owns the risk?
Merchant & POS
AFL (Application File Locator) is the field that shows where on the card the data needed for the authorization transaction is located. AFL is a list of the application data records on the card, and the terminal uses it to read the application data.
Merchant & POS
The limit that governs the maximum amount for which an offline transaction can be made on a POS terminal is called the Floor Limit. POS parameter management programs (usually GMS) maintain 3 parameters for floor limit management.