A question about barcodes?

A question about barcodes?
Why do barcodes never repeat? It’s like there’s no same barcode. How do companies from all over the world get a certain barcode that only corresponds to one product? For example, I buy a laptop from the UK. When they scan it there, it’s 0. When I get to the US, I scan it in a store and I get the same price of 0?

Best answer:

the bars are different in width and the space between them is different
you can get billions of different combinations.

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1 Comment for A question about barcodes?

  • 1. J. IGNACIO C  |  July 14th, 2007 at 7:39 pm

    your story it’s a little hard to believe, uk and us have different currencies, and retailers mark their own prices over the bar codes, not scanner has all the worldwide bar-codes on it’s memory

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