Barcodes are so passay. RFIDs are where it's at. Remotely readable, several metres away, passive, require no batteries and smaller than a grain of rice. Wal-Mart and company will be able to track your movements through the store with the left over tags in your colthing and all the tags in the mechandise you pick up. Should be good at curbing shop lifting though.
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`What is the sound of Perl? Is it not the sound of a wall that
people have stopped banging their heads against?' -- Larry Wall
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Subvert the Dominant Paradigm
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