Personally I think that the control will be a mix of things, but the obvious primary control system is using your eyes - there already exists technology for having a computer mouse tracking your eyes, with gestures (e.g. extra long stare) to click. It's mainly used for making it possible for paraplegics to control computers at the moment.The technique uses either a camera or a low-intensity laser directed at the eyes to determine the direction of the users gaze, and then trigonometry to determine where at the screen the user is looking.
https://www.pcworld.com/article/47604/use_your_head_eye_cont...
realize|13 years ago