How does an EAN Bar Code work?
When you make an agreement with a retail store to sell your items, you will need to provide them with information about your product and they will enter that information into their computer system along with prices. When a customer takes your product to the cashier for purchase, the EAN Bar Code on your product is scanned. The barcode scanner reads the lines on the barcode and it locates the product and pricing information. If you do not have an EAN on your product it would be impossible for the retail store to quickly look up your information in their computers.