| RFID | Radio Frequency Identification is already being used in license plates to identify
and charge cars as they drive through toll booths without stopping. This
technology is poised to become the bar coding and identification method of the
future. RFID tags are extremely small, barely detectable flakes, or tags of
silicon. Some are no bigger than a grain of salt. These silicon tags use radio
frequencies to transmit a code that uniquely identifies the tag, and therefore,
the item to which the tag is attached.
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