Nice video on how to hack NFC (Near Field Communication). I.E. RFID communications. This stuff is coming out in more of the latest phones…well except Apple for some reason…It promises to be the next way to ID a person or pay for a bill (via phone). The video is 30 minutes so get some popcorn.
http://dangerousprototypes.com/2012/12/23/defcon-20-nfc-hacking-the-easy-way/