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Contactless
A contactless transaction is a fast and secure payment made between a credit card and a POS terminal without direct contact, without reading the card's chip or magnetic stripe. Both the card and POS terminal must support contactless transactions.
EMV
The GET DATA command is used to retrieve a primitive data object that is not encapsulated in a record within the current application. It is used to retrieve certain primitive data objects interpreted by the application on the ICC.
Merchant & POS
DDOL is the list of data a card needs when the DDA method is used during Data Authentication. If the DDOL is not present on the card, the terminal may keep a default DDOL list instead.
Merchant & POS
The MCC code, or Merchant Category Code, is a 4-digit code used to classify merchants. Some MCC codes are restricted or prohibited, and POS terminals or card transactions may be blocked when such a code is used.
ISO 8583
F22 - POINT OF SERVICE ENTRY MODE: This field holds how the transaction was performed via the POS/ATM and the PIN entry capability of the POS device. The first 2 digits show how the transaction was performed, and the last digit (shown as x) carries the POS's PIN entry capability. Numeric...
Clearing
Chip Condition Code is a code carried in the F60 (Additional Data) DE14 field during clearing that shows the chip read status. The possible values and their descriptions are listed below.
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.
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.
Online & Authorization
TLV is a data storage method used to speed up the parsing of data. For example, reading data from a card's chip at a POS and carrying it through authorization uses the TLV structure.
Merchant & POS
Contains the EMV steps performed by the Terminal in a transaction. The TSI fields, their possible values, and descriptions of the values are shown below.
ISO 8583
DE 12-TIME, LOCAL TRANSACTION: the local time at which the transaction took place at the point of transaction (ATM, POS). 6 digits, hhmmss format. F12 differs from F7 (Transmission Date and Time).
Contactless
You can tell whether a card supports contactless payments by the four wave symbols printed on it. If the wave symbol is present, your card supports contactless transactions. If not, contact your bank for a new card.