EAN-13

EAN-13
Name	EAN-13
Caption	Typical EAN-13 barcode on a retail product
Introduced	1976
Type	1D linear barcode
Digits	13
Checksum	Modulo 10

EAN-13 is a thirteen-digit European Article Number symbology used globally for retail product identification and supply chain management. Designed for high-speed point-of-sale scanning and inventory systems, EAN-13 became a global standard adopted by national numbering authorities, retailers, manufacturers, and logistics providers. The code underpins commerce operations across supermarkets, pharmacies, warehouses, and international trade networks.

History

The development of the barcode standard traces to early research at KMart, IBM, RCA Corporation, National Cash Register, and collaborations involving engineers who worked on machine-readable codes for Sylvania, Parker Brothers, General Electric, and Western Electric. Commercial trials in the 1970s involved retailers such as Woolworths Group, Ahold Delhaize, Tesco, Sainsbury's, and manufacturers including Unilever, Nestlé, Procter & Gamble, PepsiCo, and The Coca-Cola Company. International coordination through organizations such as GS1, formerly known as EAN International and Uniform Code Council, led to formal adoption in national standards bodies like DIN, AFNOR, British Standards Institution, and ISO. Landmark retail events—introductions at supermarkets operated by A&P (company), Woolco, and demonstration events at Harrods—accelerated adoption across supply chains linking Port of Rotterdam, Port of Antwerp, Frankfurt Airport, and global distributors.

Structure and encoding

The EAN-13 symbol encodes thirteen numeric characters using a defined pattern of bars and spaces derived from earlier work at IBM Research, Honeywell, Philips, Siemens, and Hitachi. The first two or three digits typically indicate a country or numbering authority such as Japan, Germany, United Kingdom, France, Spain, United States, China, Brazil, or Australia. Manufacturer and product assignments are managed by organizations like GS1 UK, GS1 US, GS1 China, GS1 Brazil, and GS1 Australia. The symbol structure includes start, center, and end guard patterns and left/right character encodings influenced by parity schemes developed in collaboration with experts from Bell Labs and MIT. Encoding tables and specification documents reference procedures used by Eurostat, UNECE, WTO, and standards committees at ISO/IEC.

Check digit calculation

The final digit of the thirteen-digit string is a check digit computed with a modulo 10 algorithm specified by ISO/IEC 15420 and adopted by GS1. Implementation guidance from national agencies such as National Institute of Standards and Technology, Bundesamt für Sicherheit in der Informationstechnik, and Bureau of Indian Standards outlines summing odd and even position weights, multiplication by factors, and deriving the complement to ten. Retail systems at chains like Walmart, Carrefour, Lidl, Aldi, and Target Corporation validate check digits at point-of-sale terminals designed by vendors such as Honeywell International, Zebra Technologies, Datalogic, Cognex, and Motorola Solutions.

Allocation and numbering system

Prefix allocations and company number assignments are administered by GS1 through national member organizations including GS1 UK, GS1 US, GS1 Germany, GS1 France, GS1 Japan, GS1 China, GS1 Brazil, GS1 India, and GS1 South Africa. Large manufacturers such as Procter & Gamble, Unilever, Nestlé, Johnson & Johnson, and Kimberly-Clark obtain blocks of item reference numbers; smaller enterprises register local numbers via kiosks and services provided by institutions like Chamber of Commerce, Small Business Administration, Federation of Small Businesses, and trade associations including Consumer Goods Forum. Allocation policies intersect with customs systems at European Commission directorates, harmonization efforts at OECD, and retail consortiums such as EHI Retail Institute.

Variants and compatibility

EAN-13 is interoperable with related symbologies and extensions developed by technology firms and standards bodies, including UPC-A, EAN-8, ISBN, ISSN, and supplemental 2- and 5-digit addons used for publications, periodicals, and weighted items handled by publishers like Penguin Books, HarperCollins, and broadcasters such as BBC. Conversion and compatibility are addressed in technical guides from GS1 and implemented in scanning firmware from manufacturers including Symbol Technologies, Intermec, POSBANK, and Toshiba Tec. Barcode variants appear on media distributed by Amazon (company), Barnes & Noble, Reed Elsevier, and in logistics labels used by DHL, FedEx, UPS, and DB Schenker.

Applications and usage

EAN-13 is ubiquitous in retail product identification across supermarkets operated by Tesco, Carrefour, Kroger, Coles (company), and convenience chains such as 7-Eleven. Healthcare suppliers like Pfizer, Roche, GlaxoSmithKline, and hospital procurement systems integrate EAN-13 identifiers into inventory systems from providers like McKesson Corporation and Cardinal Health. Library and publishing sectors using ISBN mapping rely on EAN-13 for book trade between wholesalers such as Ingram Content Group and retailers like Waterstones. Data harmonization initiatives at UNICEF, WHO, World Bank, and humanitarian logistics centers at Red Cross and Doctors Without Borders also exploit EAN-13 for supply tracking.

Implementation and scanning technology

Barcode printing and labeling solutions from Zebra Technologies, Avery Dennison, Brother Industries, and Seiko Instruments produce EAN-13 symbols on packaging lines operated by Tetra Pak, Smurfit Kappa, Ball Corporation, and Amcor plc. Scanning technologies include laser scanners developed by Honeywell, imager modules from Cognex, and mobile camera-based decoders embedded in devices by Apple Inc., Samsung Electronics, Google, and handheld terminals from Zebra Technologies. Integration with POS systems from vendors such as Oracle Corporation, SAP SE, Microsoft Dynamics, NCR Corporation, and EPOS Systems supports inventory control, electronic shelf labeling, and analytics used by retailers, distributors, and regulators.

Category:Barcodes