A security researcher scheduled to present information on issues with radio-frequency identification (RFID) technology at the Black Hat Federal conference was silenced by security technology giant HID Global, which claimed the presentation would violate its intellectual property.
Considering they want to stick RFID chips in everything, no wonder thay dont want people figuring out how to clone an crack RFID chips.
http://www.securityfocus.com/news/11444This is another really interesting article about the same thing (plus I like the flash banner in the top right corner)
http://www.infoworld.com/article/07/02/28/HNgovtrfid_1.html