Remember the most important fact about these codes: 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
You're only buying eggs every second week? We can't have that, let's present you with a recipe that uses eggs. You still have those cookies you bought four days ago? Let's give you a coupon for milk.
And there will be a nice recipe or a coupon or a Very Limited Exclusive Offer you'll need to send to a friend, so now the app need access to your contacts, and why not sync that info with Meta, and oh look at that, we have a map of all our customers and their spending habits and geographical location and political orientation.