We do this at [name redacted as this was a joke].
When users scan their barcode, the preview window is zoomed in so users think its mostly barcode. We actually get quite a bit more background noise typically of a fridge, supermarket aisle, pantry etc. but it is sent across to us, stored, and trained on.
Within the next year we will have a pretty good idea of the average pantry, fridge, supermarket aisle. Who knows what is next