Nowadays, of course, friends are no longer strangers to Barcodes. Almost on every product packaging sold in shops and supermarkets, be it bread, masks, mineral water, to snacks, a box is printed consisting of thick and thin vertical lines. This is what is called a barcode, and is usually printed neatly in one corner of the product packaging. The goal is to design a payment application between sellers and buyers in supermarkets that is able to handle work in data management. The second is running a payment application as a solution for handling databases with accurate results and not easy to make mistakes in handling payments.Keywords : Barcode , code igniter
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