Our local public transportation system uses electronic cards (something like RFID technology) to validate rides. Users enter the vehicle and place their contactless card against a reader, and a beep tells them that the system has registered their presence.
However, reading the cards takes quite a long time (2 or 3 seconds, so it's not just a regular swipe) and it's important that the card stay placed against the reader, otherwise it doesn't get recognised. The beep, on the other hand, only happens once the process is complete.
What often happens is that the users swipe the card, receive no feedback, and think that it's not working (the cards are meant to stay inside your wallet so it's easy to think that it's just not close enough).
How could this system be improved to communicate some (preferably audible) feedback that the card is being read, but that you shouldn't take it away just yet?
Some points to consider:
- I thought of a beep that starts when you place the card, but that might bring users to believe it's all done
- The city is trilingual, so spoken words are not practical