No need to fret when your phone rings and your hands are full, when your driving, or at the gym - the future of digital devices is changing for the keyboard-less best. Microsoft has a team of R&D wizards whose job is to solely conjure up crazy new ways to interact with your personal technology. In the near future dialing numbers on your phone and flicking through tracks on your mp3 player might be as simple as tapping your forearm or touching a sequence of fingers together.

The base of the idea is that different locations on the arm are acoustically distinct, and a tap on one point sounds vibrationally different to a tap at another. Using these differences Microsoft’s Skinput technology can interpret these variations in vibrations and electric signals and through an armband connected to the device control its actions. Check out the video above, pretty amazing stuff.