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Radio frequency identification (view source)
Revision as of 00:31, March 14, 2007
, 00:31, March 14, 2007no edit summary
Radio frequency identification (RFID) is a method based on storing and automatically retrieving identification data transmitted over the radio frequency spectrum. Devices called RFID tags are transponders that transmit the stored information to a remote sensing device. An RFID tag can be attached into a product, or implanted in an animal, or a person, for the purpose of identification. RFID tags may require no internal power source, in which case they are called passive tags, whereas active tags require a power source.