Another feature of the POS system is providing various benefits for customers. If a customer would like to refund or return the product, the point of sale system would then include the corrections to the database. Most POS machines also record, layaway plans as well as gift checks for customers. The gift checks are embedded with a bar code and then the system would cancel out the number of the check. This ensures that no gift checks would be used twice and no fraudulent activities would happen. For customers with membership cards or loyalty programs, there is also a point of sale system application which record membership of customers as well as score membership points for shops that provide special privileges for members. The greatest benefit when it comes to POS systems is that they can compute and record any discounts for products. For instance, if there would be a sale for clothes, the POS system would register the percentage per sale and then remove the amount from the original price of the item. Actually, the percentage system can also record any increase of taxes so that all products would have the appropriate price.