4. FridgeCam by Smarter
Hungry, but not sure if you have enough ingredients to make yourself a nice home-cooked pasta? Considered that problem fixed with FridgeCam.
FridgeCam is a small circular camera that is stuck onto the inner door of your refrigerator. So, every time you close the door, it snaps a photo of the contents and instantaneously and sends it to your smartphone in the Smarter app which can be pulled when you want to check your food supply. The camera and app combo are smart enough to know when you finish an individual product, by adding the item to your shopping list automatically.
Image: Smarter