If you're one of those folks that always seems to run out of battery on your smartphone or tablet right when you need it the most, you're not alone. It happens to a lot of people.
But thankfully, a team from Carnegie Mellon University set out to eliminate this problem. And now, there's a viable solution that will be available for you sooner than you think.
It's called SolePower Ensole, and it's a gadget that looks like an insole to your shoe, but what it really does is harness energy from you. You won't have to worry about hunting for an outlet when your phone or tablet runs out of juice.
SolePower converts linear motion - the movement of your feet when you walk - to rotational motion that powers a generator in the SolePower shoe insert. The generator stores up enough energy to fully charge a smartphone, and all you have to do is take a little walk.