LAS VEGAS--Some of you may recall that one scene in "Back to the Future II" where Marty McFly travels forward in time to 2015 and plays a shoot-'em-up arcade game. After getting a seemingly great high score, a jaded youth remarks, "You mean you have to use your hands? That's like a baby's toy!"
I couldn't help but remember that quote when I slipped on Interaxon's Muse -- a lightweight headset that turns your mind into an input device by converting your brainwaves into digital signals. … Read more