Barcode Scanning Research

Looking for research to be done on how to translate barcodes to products. In particular looking to understand how a site like [login to view URL] supports scanning a barcode and translating it into a product. Questions to be answered: - Sources of Bar code data: Where can barcode data be sourced? Are there databases that can be contacted to translate barcodes into products? Are there suppliers of this information? - Manufacturer / Buesiness Maintenance: How does a company lke MyRegistry obtain updated barcode product data?/How do manufacturers update this information? - Costs: What are the costs for this information? Are there any free sources? - Contacts: Contact information of suppliers of this information - Articles: All relevant articles that is obtained on this topic should be provided whether it be web / print / or other. Looking to have this work completed within 1 week of selection. To differentiate yourself from the rest of submissions, please provide one source on this topic that you feel is relevant. Preference will be provided to the individual who demonstrates the best understanding of what information i am seeking.