Imagine for example using your smartphone to heat up food on your commute home
Cooking by remote control? Honestly, doesn't sound too practical. I'd have to have everything set up beforehand and it'd be just a simple to do it when I get there.
using it at the store to see what's low in your fridge so you know what to buy.
I have the latest tech on that. It's called a "grocery list." Only requires a pen and paper and it's abolutely unhackable!