With these new 'smart hair extensions' - Hairware - it's possible to control your smartphone by playing with your hair.

The inventor, Katia Vega of Beauty Technologies, sees them as a potential security device for women, so they can can send messages if they feel threatened. They also have may appeal to security services around the world.

And don't get too jealous fellas, apparently there's a version on the way for chaps too - although you'll need to grow a beard to use them!