QR codes will not likely be used to their potential. They are being used as 1D bar codes. I have seen products with several QR codes all over different parts and in the manuals. Usually if you scan them going to a useless homepage or a manual that does not specifically refer to the thing being scanned without an exhaustive search.

Remember the most important fact about these codes: Nobody cares.

Sure,nobody cares.

But if my phone automatically tells me about stuff in my fridge :

-The cheese has expired or about to be expired

-There's a recall on that baby formula

That's useful.

Or if uses those smart carts at the supermarket, it can tell me:

-this isn't safe with my peanut allergy

-this isn't ethically sourced

-the expiry date is too short