I think we should place a QR on every product label, and scanning that QR takes me to data about the product such as its historical mass/volume, cost, and unit price, as well as its brand owner right on up the chain. I see you, Nestle. Of course, giving customers information to make an informed decision is Bad For Business.
Coming up with unique identifiers for every single specific recognizable product would be an incredible feat, that would have huge impacts beyond this. Now I'd totally expect a brand to just renew identifiers at random and break any tracking that doesn't help them.
You mean like....barcodes that are on pretty much every item ever?