First please look at their card to make sure there is no damage to the card (hole punched, been washed, chewed up,
gouged, bent or cracked) that would cause the card to need to be replaced.
Once you have verified that there is no damage, please make sure you are properly tapping your card:
- To tap you must hold your card flat against the validator for a count of three.
- Swiping a card will cause it to be “Invalid” since the system can’t read the card.
- A card will tap “Invalid” if tapped twice within 4 minutes and the screen will show “Card Already Tapped” this is a built in feature to prevent people from passing their card back.
- Sometimes tapping a card while it is in a wallet or up against another type of card or in a plastic sleeve can cause “Invalid” please tap card by itself.