This system provides a public user interface for enquiring the validity of product barcodes by barcode, customer name, and phone number. The enquiry process is performed by the system based on an existing database of product names and their valid barcodes. If the entered barcode is valid, the customer’s name and phone number, and the names of the enquired products are stored into the database. Also, there is an administration panel to view the product barcodes and customer information.