If an optional
modular contactless reader is connected to the Vx810 Duet terminal and
your merchant account is configured for it, you can process contactless
transactions. In a contactless transaction, the customer taps a contactless
card on the contactless reader instead of swiping or inserting it.
Note: If an optional external PINpad is connected to the Vx810 Duet, the contactless reader is connected to the PINpad instead of to the terminal.
Contactless cards can be tapped on a contactless reader for credit Purchases and Refunds only if the amount is at or below the maximum Contactless Dollar Value (CDV).
To determine the maximum CDV for a card, print the EMV Parameters Report and locate the Contactless Trans Limit parameter under the report's record for the card. A CDV of 9999 means there is no maximum limit.