Bar code scanner are one of many technological wonders. Bar code mainly use is to scan product and identify that product information (you need to supply this information). this is widely used in most establishment like supermarket, groceries and other merchandising store. If you’re planning to own one either for personal or business use visit www.posmicro.com and see their available barcode scanner. They even sell POS system if ever you are planning to have a mini grocery. Just check their site for more information.