Changes

'''Radio frequency identification''' (RFID) is a method based on storing and automatically retrieving identification data transmitted over the radio frequency spectrum. Devices called "[[RFID transponders]]", "RFID tags" or "chips" are [[transponder]]s 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 [[homo sapiens|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.

'''Radio frequency identification''' (RFID) is a method based on storing and automatically retrieving identification data transmitted over the radio frequency spectrum. Devices called "[[RFID transponder]]s", "RFID tags" or "chips" are [[transponder]]s 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 [[homo sapiens|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.

RFID is used to time sporting events, inventory control, and the collection of tolls on highways.

RFID is used to time sporting events, inventory control, and the collection of tolls on highways.