AboutBarcodes. How you set up barcodes through GS1 US®: You obtain a unique company identification number called a GS1 Company Prefix. It will identify your company to businesses all over the world. Using that prefix, you add a number that specifically identifies your product. Combined with a check digit, this creates a GTIN ® (Global Trade Iwant to make an input where it can be automatically filled in after scanning a QR or barcode scanner using a webcam or phone cam. for the script I imagined something like this

how to scan barcode to check original