An RFID tag (also referred to as a transponder) is an electronic device that communicates with RFID readers. An RFID tag can function as a beacon or it can be used to convey information such as an identifier. An RFID tag consists of (1) a small integrated circuit chip (2) attached to a miniature antennae, which is capable of transmitting a unique serial number to (3) a mobile or stationary reader in response to a query. A fourth important part of any RFID system is the database where information
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