Re: Well... let's see...
What when I take several items out at once when cooking (as I try to be efficient when I'm organised), and then put them back in together? Which item lost how much weight?
What about left-overs. I regualarly cook for more people than are present, in order to freeze leftover portions, so I have (actually edible) ready-meals available to me.
How much in any fridge is staples, to be instantly replaced and how much is what's available or on offer? Not including parties. My fridge should always contain eggs, milk, limes, fruit juice, various condiments, yoghurt and cheese. Anything else depends on what I could find, or who's coming round for dinner.
What about using multiple suppliers? I have a greengrocer at the end of my road. I try to buy all my veg from them, unless laziness kicks in and I'm in Sainsbury's anyway.
What's the point of filling out only a third of my shop? Only about 30-40% of any shop goes in the fridge. The rest is cupboards, bathrooms, laundry cupboard.
How much is this bloody fridge going to cost? And how long before it breaks down? It's got multiple cameras, multiple weight sensors. What happens when the bulb goes in the fridge, and no-one can be arsed to replace it, so the cameras can't see anything? I'm prepared to believe that the cameras will survive cold and condensation - but not the weighing shelves getting stuff plonked on them every couple of hours, and water dripped on them. And I'd worry for the touchscreen on the door too.
In my opinion the answer is twofold. Online shopping is good. Have a tablet, wander round kitchen, look in fridge, freezer and cupboards, see what's missing, pick from list of favourites on website, order.
But I still prefer to go to the shop. So for me, shopping list app on smartphone. When you use the last but one of something, take phone from pocket, add to list. After you've typed the first few letters, it auto-completes if it's something you've used before.
The internet of fridges is still way too complicated.