One extra barcode digit catches every one-digit change
The stripes get all the attention. The quietest piece of engineering in a UPC is the final digit. Take the sample code 036000291452. The last 2 does not name a flavor, a package size or a...
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The stripes get all the attention. The quietest piece of engineering in a UPC is the final digit. Take the sample code 036000291452. The last 2 does not name a flavor, a package size or a...