Radio-frequency identification (RFID) is the use of an object (called an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio fequencies.
RFID is utilized for open-road tolling, making payments using mobile phones,
The US government utilizes RFID for traffic management, and companies use the technology to keep track of expensive equipment, essentially initiating a surveillance program for inventory. RFID’s future is currently not known due to privacy regulations that may keep many of the applications from moving forward.
A Westport, CT company–SecureRF–is currently examining applications to use RFID chips to keep track of children via student ID cards using radio frequencies much similar to GPS (although very different technologies).