You're right, barcodes are just unique IDs individually identifying producers and products.
However, as I wrote, the vendors of these systems provide customisation services to improve the OCR of the price relative to the barcode. Location, font, etc. Even the name can be imported, and in some cases shelf space per product, thus stock estimates, etc.
However, as I wrote, the vendors of these systems provide customisation services to improve the OCR of the price relative to the barcode. Location, font, etc. Even the name can be imported, and in some cases shelf space per product, thus stock estimates, etc.