We use barcodes to track many physical things. Groceries, over-the-counter medications, computer parts, housewares, books, CDs, DVDs. Barcodes even make their way into weird places. My health card has a barcode on it, as does my library card. Even some medical samples get a barcode. Barcodes are everywhere. An example UPC-A barcodeRecognise me? Of these, UPC-A [1] is probably the most recognisable. This is the "Universal Product Code" and you'll see it on most things you buy day-to-day. You c...
