The International Article Number (EAN) or the barcode. Use a single checksum digit. The check digit is computed modulo 10, where the weights in the checksum calculation alternate 3 and 1. In particular, since the weights are relatively prime to 10 the EAN system will detect all single digit errors. But, since the difference of consecutive weights is even, the EAN system does not detect all adjacent transposition errors. So some luck is needed to just come up with a valid barcode number. And it also have to be drawn correctly. Anyway a funny storry@nerdegutta
can you scan your barcode? does it ring up jack daniels? I'm curious. had a friend with a barcode tattoo. It wasn't a specific barcode. he just told the artist he wanted a barcode & the artist drew it. He said he was curious and had it scanned at the store; rang up as pampers diapers
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