I was given a used single-use transit card which allowed the user to “tap in” to board a bus. Given that it was meant to be used only once suggested some serious cost constraints on the design.
Teardown time!
It looks like a piece of paper where the antenna was pad-printed or silk screened on using conductive ink. A small integrated circuit from NXP was then applied.
Near as I can tell the card is from Russia.
NXP MIFARE Ultralight EV1 MF0ULx1
Mikron M-PASS
- Post Time: 08-03-16 - By: http://www.rfidang.com