How to read barcodes

Most barcodes in the US are 12-digit UPC barcodes, with ten digits at the bottom of the code and one small number to each side. Impress your friends by asking them to select a random item from the kitchen with a removable label and cut the numbers off of the UPC barcode; you can then proceed to read the numbers encoded in the lines. Find out how at http://wiki.ehow.com/Read-12-Digit-UPC-Barcodes

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