Before a company can begin using barcodes, they must first assign the numbers that go inside the barcode, called GS1 Identification Keys. The first step in assigning a GS1 Identification Key is to obtain a GS1 Company Prefix from a GS1 Member Organisation.
The GS1 Company Prefix provides a way for companies to create identification keys for trade items, logistic units, locations, parties, assets, coupons, etc. which are unique all around the world. GS1 Company Prefixes are used by 1.3 million companies worldwide as the basis for creating unique numbers to identify everything in the supply chain.
For information on the way to obtain a GS1 Company Prefix see 'Need a GS1 barcode'