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ShoppingSpot > How do bar codes work?




How do bar codes work?

Ever wonder how the scanner at the store reads the tiny bar code to determine what you're buying and what price it should be? They may just look like groups of bars and numbers, but they're very specific indentifiers. Artist Scott Blake offers this simple diagram that shows how the various components of a bar code work together. At the site, you can also view some of Blake's art, all based on bar codes.

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