Eighteen years ago I did some engineering work on an internet-ready refrigerator. It was strictly proof of concept stuff. It idea was to couple a frig with an online computer equipped with a scanner.
As food was removed from the frig it was scanned and deducted from the inventory. When minimum stocking levels were reached an order was automatically placed with a web-based grocer.
Not my conception - I just made the darn thing work.
Did it keep track of when the milk spoiled? That would be damn handy. I hate when I dump milk on my oatmeal and it curdles.