Universal Product Code
Barcode symbology used for tracking trade items in stores / From Wikipedia, the free encyclopedia
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The Universal Product Code (UPC or UPC code) is a barcode symbology that is widely used worldwide for tracking trade items in stores.
UPC (technically refers to UPC-A) consists of 12 digits that are uniquely assigned to each trade item. Along with the related International Article Number (EAN) barcode, the UPC is the barcode mainly used for scanning of trade items at the point of sale, per the specifications of the international GS1 organisation.[1] UPC data structures are a component of Global Trade Item Numbers (GTINs) and follow the global GS1 specification, which is based on international standards. But some retailers (clothing, furniture) do not use the GS1 system (rather other barcode symbologies or article number systems). On the other hand, some retailers use the EAN/UPC barcode symbology, but without using a GTIN (for products sold in their own stores only).
Research indicates that the adoption and diffusion of the UPC stimulated innovation and contributed to the growth of international retail supply chains.[2]