DIGG:

This is the first time someone has cloned an human-implanted RFID chip The pair demonstrated the cloning process: Westhues held a standard RFID reader against an arm to register the chip ’s unique identification number. It actually has no security devices what-so-ever – VeriChip’s claims that its RFID chips can not be counterfited

Former Wisconsin Governor Tommy Thompson is (was) a director of Applied Digital Solutions, a firm that is promoting this technology.