We live in a world where everything should be fast and accurate. Most of the retail stores, restaurants and hotels earlier had books where they would calculate the total amount for the services used by the customers. However, things have become better now and most of them have POS systems which are also known as Point of Sale systems. These systems are really quick and can be modified as per the requirement of the organization. Today, almost all hotels, restaurants and retail stores have this system which helps them to provide quick service to their customers when they checkout.