User's Manual

Uno Specifications Version 1.9
Basic Contactless Operation
Confidential & Proprietary Page 8
2 Basic Contactless Operation
When a valid contactless payment card is presented to the reader, the reader performs a
payment transaction with the contactless card. If the transaction is accepted, the unit
will display a row of 4 LEDs that light up in sequence and the reader buzzer will
inform the user about the transaction verdict. The reader then communicates the
transaction data to the Host (POS).
A landing zone logo, lighted by the reader, on the graphic overlay indicates where the
contactless card or tag should be presented.
The interactive LEDs and Buzzer give the user an indication of the transaction status.
Figure 2-1: Card Presentation