I have once asked “how did that really works?”. What I did next is sit at the front of my computer then surfed the net. I have figured out that each barcode on one kind of product has it’s own, special barcode that contains specific symbols that defines different numbers and characters that determines the exact price of the item. Now that we have known bits of the secrets of laser barcode scanner, let us search for more at the net. I believe that exploring more with yourself at the net makes you better at understanding these devices. Good luck.
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