There are barcode scanning libraries that specialise in scanning dozens or hundreds of barcodes in a single frame.

These are typically used to mass-import your competitors prices just by walking through the shop with a camera mounted on your shoulder. Or phone in a shirt pocket with the camera facing forward.

There’s a few white-label companies that offer these apps. Many of the barcode companies offer their own version of this app. They’re not usually available on the AppStores.

The reason for this is that each competitor requires slight customisation (font, price location relative to each barcode, etc) to get the best results.