I can imagine a fridge with an (outside) camera that can take a picture of your groceries (make the user hold it for a fraction of a second in front of the came

I can imagine a fridge with an (outside) camera that can take a picture of your groceries (make the user hold it for a fraction of a second in front of the camera) and categorize it as well as see its expiration date (or estimate, e.g. for fruits and vegetables) would actually be useful, considering we throw away so much food. And if it can't identify the item, it can even ask the user to identify the item ("pasta I made last night") and how long they think it will last. If it's made by a committee of idiots, it will just repeatedly say "Cannot identify item. Please name this item."... if it's actually good it will just have different beep tones for different states (Beep A: "All good", beep B: "Can't identify item", beep C: "Can't see expiration date", etc)