Simple RFID cloner withn ATiny

Guy used some stuff from avrfid to build a really small RFID clone for his HID badge.  The original goal was to clone several badges, but still just the one with a chip and wire is impressive.

http://www.nycresistor.com/2012/12/27/rfid-multipass

http://scanlime.org/2010/06/avrfid-1-1-firmware/