The use of barcode scanner has made business point of sale systems more effective, faster and 99.9% error-free compared to the manual processing of sales. It has become beneficial for both the store owners and the customers because it only takes a few minutes and paying for the items in your shopping cart is done.
Imagine if department stores and supermarkets do not have barcode scanners, it would be just like the old times, when people fall in line for such a long time waiting for their turn. Cashiers have a hard time and sometimes even make those erroneous entries that makes prices either higher to the disadvantage of the customers, or making price too low, which means losing business for the store owners. That’s why if you have noticed, even convenient shops are now making use of the device.
Bar code scanners are also useful when it comes to security and identification. Anyone can create a copy of your identification cards, etc, but it won’t match the bar codes, thus protecting the establishment from any intruders, and from other fraudulent activities.