Patent ID: 7492258

Claim:
A method of transmitting information between a radio frequency identification (RFID) tag and a server, said method comprising the steps of: encrypting, by said RFID tag according to a predetermined scheme, identification data identifying said RFID tag, to result in encrypted RFID information; reading, by a RFID reader, said encrypted RFID information from said RFID tag; transmitting, from said RFID reader to said server, a transmission, wherein said transmission includes said encrypted RFID information; decrypting, by said server according to said predetermined scheme, said encrypted RFID information to produce said identification data; generating, by said RFID tag prior to said step of encrypting, a first pseudorandom number, wherein said step of encrypting is performed using said first pseudorandom number; and generating, by said server prior to said step of decrypting, a second pseudorandom number, wherein said second pseudorandom number corresponds to said first pseudorandom number, and wherein said step of decrypting is performed using said second pseudorandom number.