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This code used on all current consumer products allow a 12 digits code, the thirteenth digit is a control key that we’ll must generate. Before going into technique, two smalls evasions.

All the found EAN13 bar codes on the net (Incomplete demonstration font) aren’t free, several times expensive, and with uncertain quality; the width module isn’t always permanent in the font definition. I’ve decided consequently to draw entirely an EAN13 font and to propose it for download. I test it on a laser printer with size 14, what gives a very small barcode with a width of about 13 mm, result : reading at 100% ! On a good inkjet printer, this same size of 14 work very well.