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Retail (UPC/EAN/GS1) · since 1973

UPC-A

Retail products in the United States and Canada

The barcode on almost every product in a North American store. The first digit is the number system, the next five the company prefix, the next five the item, and the last the check digit. A UPC-A is an EAN-13 that starts with 0.

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At a glance

Introduced
1973
Created by
George Laurer at IBM, for the US grocery industry
Characters
Digits 0–9
Length
12 digits (11 data + check)
Check
Mod 10 (weights 3,1)
Capacity
11 data digits

Example: 036000291452

036000291452
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Anatomy

Start guardDigit 0 · L (odd parity) set0Digit 3 · L (odd parity) set3Digit 6 · L (odd parity) set6Digit 0 · L (odd parity) set0Digit 0 · L (odd parity) set0Digit 0 · L (odd parity) set0Centre guardDigit 2 · R set2Digit 9 · R set9Digit 1 · R set1Digit 4 · R set4Digit 5 · R set5Digit 2 · R set · check digit2End guard

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