The history of RFID can be directly related to a similar technology employed by the Allies in World War 2 called IFF (Identification Friend or Foe). The function of this technology was to identify whether an incoming plane was a friend or foe by using coded radar signals. These signals would trigger the aircrafts transponder, and a correct reply indicated a friendly military or civilian aircraft. After the war, scientists and researchers began to explore the use of RFID to store and relay information.
Medical: tags are placed on prescription pill bottles for the visually impaired. A special reader provides audible information on the name, instructions and warnings of the prescription.
Animal Identification : low frequency tags are implanted in animals, wild or domestic, which can be read to provide information such as gender, name, diseases etc. As well, these tags allow lost pets to be returned to their owners.
Tracking : High frequency RFID tags are used to track library books, baggage, ID tags, warehouse inventory and even credit cards. American Express has a new service called Express Pay, featured on the American Express Blue credit card, which utilizes RFID technology.
Geology/Vulcanology - RFID transceivers relay seismic information to specialized readers, greatly simplifying the collection of data.
Automotive : Michelin has spearheaded a program to embed RFID tags in their tires. This will help track down problems should a recall have to be utilized
Human : As frightening as it may seem, RFID technology is already tracking human beings.
Border Security - RFID Chips implemented for the USA Canada Nexus program