Personal Identification Number (PIN)

Personal Identification Number (PIN) is a four- to 12-character alphanumeric code that enables a card issuer to authenticate the cardholder to approve an ATM or terminal transaction occurring at a point-of-sale (POS) terminal.

Online Operating Mode

Online operating mode is an operating mode in which a card acceptance device is connected to a central computer system and has access to the database for authorization, inquiry, and file changes. Live files are accessed for each transaction. For authorization, an operating mode in which member banks are directly connected to the card network via a MIP or their host computer. Live files are accessed for each transaction.

Offline Operating Mode

Offline operating mode is an operating mode in which a card acceptance device is not connected to a central computer source. Responses are governed by the parameters or guidelines set within the terminal or supporting device as defined by the card issuer. The accessibility of information is not in a live environment, meaning that current active files are not being viewed during the time the transaction is conducted.

Merchant ID Number

Merchant ID number is unique number assigned by the acquirer to identify the merchant.

Merchant Authorization

Merchant authorization is the sales validation for the merchant, by telephone or authorization terminal, to guarantee payment to the merchant.

MasterCard SecureCode

MasterCard SecureCode is a program supporting cardholder authentication and guaranteed payments over the internet for MasterCard and Maestro transactions.