Chris Paget hosted a workshop on RFID hacking on 2009-04-11.
It was a success and now there are numerous RFID projects in the works.
Perhaps others could link to their project wikiwiki pages here?
You were taught everything you need to know in order to design and build a 125KHz RFID cloner, starting from V=IR and basic algebra. We covered theory of operation, basic RF filter design, and enough programming for the PIC microcontroller to glue it all together. Among other things the speaker presented the basics... then assisted others with their RFID projects.
What equipment was there?
Chris Paget will be bringing:
DSO-2250 USB oscilloscope
USB reader for HID cards
1 working HID cloner
Parallax 125KHz RFID reader module
13.56MHz PayPass reader
XR400 reader+antenna for 900MHz EPC tags
USRP + 2 x RFX900
Working code for EPC Gen2 on USRP
USB PIC programmer
Various other RFID widgets
Other people should bring:
Oscilloscopes (preferably storage scopes)
Components (we'll mainly be using discretes)
Microcontrollers and programmers if you're averse to the PIC16F family
USRPs and daughterboards
RF gear (antennas, pre- and power-amps)
Ham radio licenses
Anything RFID-related that you want to hack on