Disclosed is one method and one apparatus which teach improved techniques in equipping an RFID with security measure. Conventionally an RFID is employed basically to replace the usage of an infrared bar-code label thereby to supply electronic or digital signature and identification. In this sense, the...http://www.google.ca/patents/US7239240?utm_source=gb-gplus-sharePatent US7239240 - Method and apparatus for implementing security protection over RFID