Glossary
Terminal Operation
Communications
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AVS - Address Verification System
A security method used for Customer Not Present keyed transactions to help reduce fraud. This method
confirms the house number and numbers from the postcode of the Cardholder’s registered address.
(Not applicable on International cards.)
Batch
The store of transaction totals in the terminal.
CVV2
Card Security Code (also known as CVV, CV2, CVC, CVVC and CSC). This is usually used for keyed
transactions to reduce fraud. The CVV2 code is a 3 digit number found on the signature stripe, or
for American Express, a four digit code on the front of the card.
Cashback or PWCB
A value-add service which allows you to debit a cardholder’s debit card and hand over the equivalent
value in cash.
MID – Merchant Identification
A 7-16 digit number assigned by your bank to identify a merchant. Often abbreviated to MID. Additional
card schemes may have separate MIDs
PIN - Personal Identification Number
This is usually a 4 digit number entered at the point of sale to validate the Cardholder.
End Of Day Banking/Settlement
The procedure whereby the terminal checks the totals it has stored in its Batch with the totals stored
at your acquirer.
Terminal ID (TID)
A unique 8-digit number assigned to each terminal.
UKCA - UK Cards Association
The organisation defining the rules and standard for the operation of most Point of Sales equipment
in the United Kingdom and Ireland. Formerly known as Association for Payment Clearing Services (APACS).
WiFi Access Point
A device that allows a WiFi terminal to connect to a host or acquirer. The access point can communicate
with an external network either via dial or network communications.
WiFi
A wireless method of short range communication usually found in handheld devices.
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