RFID is short for "Radio-Frequency Identification." RFID tags are small integrated circuits that can be scanned with a radio transmitter. This means they can be simply passed into the range of the transmitter rather needing to be swiped or scanned directly, like a credit card or UPC label. RFID tags have many applications, including inventory tracking, retail loss prevention, electronic toll booth payments, and keyless entry.

Updated: August 27, 2009