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RADIO FREQUENCY IDENTIfication (RFID) is a technology that uses radio waves for identifying objects, persons, processes, transactions or events.
An RFID device works like a bar code or a magnetic strip on the back of a credit card or ATM card.
It gives a unique identifier for an object and must be scanned to retrieve the identifying information. An RFID device can work within a few feet (up to 20 feet for high-frequency devices) of the scanner.
The basic components of RFID are the RFID tag, RFID reader, air interface for wireless communications and software application.
The tag is a package or small device that can be attached to an object. It …