What is the Barcoding System?
The barcoding system, created in the 70′s by George Laurer, is a universal system for keeping track of items and prices in inventory systems worldwide. This is now used by almost all retailers worldwide and works under the premise that each barcode is only allocated to one product, therefore in any store there is no chance of a barcode being on two different products. This system incorporates both UPC-A numbers and the superset EAN-13 Numbers.
Look here for CD barcodes, DVD barcodes, ISBN book barcodes and ISSN magazine barcodes.