3 A B C D E F G H I J K L M N O P Q R S T U V W Y

Radio Frequency Identification

Radio Frequency Identification (RFID) is the set of technologies which enable the identity of an item to be transmitted to a receiver by radio . It is an example of the broad category of automatic identification technologies.

RFID usually involves two components:

  • (1) a tag or smart label which includes a unique ID and a wireless transmitter and
  • (2) a receiver.

There are many RFID applications, for example access control (tags in personnel badges, readers in door entry mechanisms); and retail checkout (tags on each item are read when cart passes the reader).