Throughout time, men's nipples have not been very functional. Until now.

Now there's a use for the nipples of roughly have of the world's population.

Yep. You can now use what God gave you to - wait for it - unlock your new iPhone!

The iPhone 5s has a feature that allows you to lock and unlock your phone with a fingerprint. For some reason, someone decided to use a nipple instead - and it works!