Patent ID: 8820639

Claim:
A method comprising: providing an RFID device, the RFID device including an integral card and storing RFID data accessible using an identifier specific to that RFID device, the card having at least one layer with an optical medium supporting writing and reading of data using optical indicia; reading an optical signal from a location on said optical medium and generating analog optical data, the analog optical data obtained from specified analog optical properties of the optical medium or the optical indicia corresponding to a media fingerprint unique to the particular card, the analog optical data including the identifier specific and unique to the particular RFID device and differing from any data digitally written to the optical medium; conducting security handshaking between an RFID reader and the RFID device using the optical data to generate and transmit an activation signal to access RFID data on the RFID device the RFID device allowing access by the RFID reader to RFID data stored in the RFID device only if the activation signal includes the identifier specific to that particular RFID device.