Just about everything we buy these days has a barcode scanner on it. It makes it easier for cashiers to check out customers in department and grocery stores. There are some places that will even scan ID cards of their employees or visitors. Bar code scanners are practically everywhere. The ability to scan bar codes has made it possible for us to do ‘self’ checkout in certain stores. I like to use this method when I only need a few things. Bar codes and bar code scanners have certainly made life a little easier for us.