Brain-controlled robot limbs have already helped the disabled gain some mobility, but full-fledged robots have proven elusive: how do you use thoughts to steer a free-roaming machine? Swiss researchers think they have the answer. They've developed a mind-controlled telepresence robot that lets those with motor disabilities travel when it would otherwise be impractical. It's ultimately a laptop on a pedestal, but it uses clever semi-autonomous software to take the hard work out of controlling where the robot goes. You only have to don an EEG-based cap and imagine moving your hands or feet -- the robot plots a path based on your commands, and avoids obstacles all on its own.