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bar code Last modified: Tuesday, February 17, 2004

The machine-readable representation of the UPC. Bar codes are read by a scanner that passes over the code and registers the UPC. The width of each black line and the subsequent white space between each line coincides with the numbers of the UPC.

The Uniform Code Council Home Page Information on the organization, how to acquire UPCs, industry news, and an extensive glossary of e-commerce terms.