Patent ID: 8176323

Claim:
A radio frequency identification (RFID) authentication system comprising: a RFID device comprising: a first RFID tag comprising: a first integrated circuit device storing an encrypted identifier for a specific user, said encrypted identifier encrypted with a public key; and a first RFID tag antenna connected to said first integrated circuit device, said first RFID tag antenna transmitting said encrypted identifier, when activated; and a second RFID tag comprising: a second integrated circuit device storing a private key; and a second RFID tag antenna connected to said second integrated circuit device, said second RFID tag antenna transmitting said private key, when activated, said first RFID tag antenna operating at a first radio frequency and said second RFID tag antenna operating at a second radio frequency different from said first radio frequency and having restricted use relative to said first radio frequency; and a RFID reader comprising a first RFID reader antenna for activating said first RFID tag antenna and second RFID reader antenna for activating said second RFID tag antenna.