The kind of overcoats I had in mind were the soft furry type...

Joe, it comes back to the reply posted by Jumper - what kind of card are we taking about? Credit Card type thing (Magnetic Strip), or an iButton type card (London Underground Oyster Card), or a Smart Card of sorts like you plug into your Satelite/Cable Box, or just a dumb EEPROM type card like you use for your Digital Camera's... there's loads of different cards out there, what kind of CARD did you have in mind?