Wave hello to the next interface

Today, we control our electronic world by touch-we tap, we swipe, we pinch and zoom. The touch interface went from being a novelty back in 2007, when Apple first brought it to the iPhone, to a ubiquitous feature in less than a decade. It is so commonplace that toddlers declare nontouch displays broken when the screen doesn't respond to their fingers. But touch isn't the end of the story. You can't use it when you're dripping in the shower, you can't wear a touch screen on your eyeglasses, and you probably won't explore virtual reality by swiping and pinching a handheld slab of glass.