Amazon Is Making a Smart Fridge?

There's a rumor that amazon's working on a smart fridge. Amazon already makes the thing where they have a camera pointing at you, detecting whether or not you pick up food in their stores. Why wouldn't they also put that in your house? They're gong o put the shopping list, yes, but if you're going to have an interface that complicated, do you think they'e oingt be able to pull that off?