While we spend a lot of time on our smartphones, a good majority of the actions we do usually require no more than a few seconds of tapping. Those, however, require us to look at the screen, even for a short while, which can sometimes be dangerous. Voice control tries to mitigate that, but not all actions, or voices for that matter, can be accommodated. That is why Fingertips Lab, a company formed by former GM Innovation head P.K. Mishra, is introducing O6 ("oh-six"), a wireless rotary controller that lets your fingers do the talking, leaving your eyes free from distraction and keeping you out of danger.