The program helps the user to register products, prices and information through a tool to read the barcode of products and store them in databasesThe cashier program helps the user to retrieve information and prices of stored products by reading the barcodeThe user can read an infinite number of products and gives the price of each product separately, then gives the total prices of the products that the user has read the barcode of, as in the cashier machinesThe application can reduce prices on any of the stored products and add the new discount price. When reading the barcode when selling, the new discount price appears.