What do the LED lights on the top of the Reader indicate?

Posted: Apr 02, 2016

There are 4 LEDs on the top of the Reader used to indicate progress of a transaction.

  • Blue – For contactless transactions, indicates that the Reader is waiting for card. The Reader will also beep, indicating you should swipe or tap the card.
  • Yellow – Indicates the Reader is reading the card.
  • Green – Indicates the card read was successful.
  • Red – Indicates a card processing error.

Note: The yellow and green lights turn on and off quickly.