A RFID system has several components including chips, tags, readers and antennas. In its simplest form, a small silicon chip is attached to a small flexible antenna to create a tag. The chip is used to record and store information. When a tag is to be read, the reader (which also uses an antenna) sends it a radio signal. The tag absorbs some of the RF energy from the reader signal and reflects it back as a return signal delivering information from the tag's
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