Patent ID: 7382225

Claim:
A radio frequency identification (RFID) security system, comprising: an RFID tag having a user ID code, wherein the RFID tag comprises: a tag antenna arranged to receive a reader ID code; a tag memory arranged to store a reader password; and a tag controller electrically connected to the tag antenna and the tag memory, and arranged to determine whether the reader ID code is the same as the reader password, wherein when the reader ID code is the same as the reader password, the tag controller is arranged to transmit the user ID code through the tag antenna; and a portable electronic device, comprising: a reader arranged to communicate with the RFID tag for receiving the user ID code and transmitting the reader ID code; an identification memory arranged to store a user password; and an identification controller electrically connected to the reader and the identification memory, and arranged to determine whether the user ID code is the same as the user password, wherein when the user ID code is the same as the user password, the identification controller is arranged to output an enable signal, such that an access to the portable electronic device is granted.