OpenPCD

The OpenPCD Passive RFID Project offers great accessability to RFID hacking tools for both professionals and novices. Keep an eye on this one.

RFID Sniffer

Keep your key cards close and wrapped in tin foil, hackers are out and about armed with RFID Sniffers ;)

More on the sonMicro 13.56MHz reader module here and here.

RFID firewall

A quick description of RFID Guardian, a firewall for RFID tags. Development was done using the Triton PXA270 (Intel Xscale) devkit. Homepage of the project is here.

LayerOne 2007

Instructive and funny video from LayerOne 2007 about commonly used physical access control technologies. The Wiegand, proximity and RFID protocols are covered, with the focus being on hacking a common Wiegand implementation (28:50). An honourable mention must be made of the concealed bar-code card as being one of the most "embarrassing" attempts at security through obscurity. (As the presenter said: "If you ever find out someone working for you implemented such a system, fire them. Then shoot them so they don't infect the rest of us.")

More good talks focussing on privacy matters: RFIDiots and Anti-Forensics.