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2. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

3. List of GS1 country codes - Wikipedia

   en.wikipedia.org/wiki/List_of_GS1_country_codes

   This is a list of country codes used by GS1. Not to be confused with target-market-country-code. Source: GS1 Company Prefix. Code. Country. 001–019. UPC-A compatible - United States. 020–029. UPC-A compatible - Used to issue restricted circulation numbers within a geographic region [1]

4. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode ...

5. GS1 - Wikipedia

   en.wikipedia.org/wiki/GS1

   GS1 is a not-for-profit, international organization developing and maintaining its own standards for barcodes and the corresponding issue company prefixes. The best known of these standards is the barcode, a symbol printed on products that can be scanned electronically. GS1 has 118 local member organizations and over 2 million user companies.

6. Global Trade Item Number - Wikipedia

   en.wikipedia.org/wiki/Global_Trade_Item_Number

   Global Trade Item Number. The Global Trade Item Number (GTIN) is an identifier for trade items, developed by the international organization GS1. [1] Such identifiers are used to look up product information in a database (often by entering the number through a barcode scanner pointed at an actual product) which may belong to a retailer ...

7. International Article Number - Wikipedia

   en.wikipedia.org/wiki/International_Article_Number

   These barcodes only represent the digits 0–9, unlike some other barcode symbologies which can represent additional characters. The most commonly used EAN standard is the thirteen-digit EAN-13, a superset of the original 12-digit Universal Product Code (UPC-A) standard developed in 1970 by George J. Laurer. [1]