Abstract :
Radio-frequency identification (RFID) has existed for a number of years, with some in the industry believing that the industry had its start during World War II with the advent of the Identification Friend or Foe (IFF) method of identifying allied aircraft. In that system, a transponder within the aircraft detected the signal from the shore-based radar systems and responded with a specific encoded signal as a return. While this may have been the impetus of RFID, the first commercial applications had to wait on advancing technology developments to enable success.
