Honestly, I can't even imagine what the fuck a "smart fridge" would do. I don't even want to look it up. The only reasonable functions for a screen on a fridge would be MAYBE the temperature or something. Even a washing machine/dryer/dishwasher I could see maybe see someone wanting a notification when it finishes it's cycle but a fucking fridge just sits there and keeps shit cold.
I'm pretty sure it tracks how much food you have and can automatically order more to be delivered. Cause I guess it's too difficult to make a list and go to store yourself.
I don't see how it could possibly track that (i'm a programmer) - there's gotta be hundreds if not thousands of different milk bottle shapes with the same number of various labels in the world, and how would it know how much milk is left in that bottle? I suppose the food ordering would maybe make sense - You run out of milk, close the door and order more or at least maybe can compile a shopping list directly from the screen or something and push it to your phone?