There is no information actually stored or encrypted in a barcode. When you go to sell your product at a store, that store will have you fill out a product information form. On that form is where you will put your company and product details as well as your 12-digit UPC barcode number. The store then manually enters that information into their inventory management computer. This way, when they scan your barcode at the register, it calls up that form in their system. In other words, the barcode is simply a link between your product and the product information form you fill out for each store that sells your product.