A standard 13-digit (12 data, 1 check) barcode format.
An EAN-13 barcode (originally European Article Number, but now renamed International Article Number even though the abbreviation EAN has been retained) is a 13 digit (12 data and 1 check) barcoding standard which is a superset of the original 12-digit Universal Product Code (UPC) system developed in the United States.
Source: http://en.wikipedia.org/wiki/International_Article_Number_(EAN)