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Its probably an RFID tag used more for identifying that product for identification as part of the checkout process
Think of it as a wireless barcode, but its more specific - it usually it identifies that particular book as opposed to just its title.
Its just a unique ID number, the computer stores the details of the book and associates that to the unique ID.
Last edited by rally; 30-11-2015 at 11:09 PM.
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