Startup idea: We have a lot of dexterous muscles in the face. The keyboard could probably be replaced with a face sensor. I would love to work from the couch, only using my face.
"My main interface to the computer is through a program called EZ Keys, written by Words Plus Inc. This provides a software keyboard on the screen. A cursor automatically scans across this keyboard by row or by column. I can select a character by moving my cheek to stop the cursor. My cheek movement is detected by an infrared switch that is mounted on my spectacles. This switch is my only interface with the computer. EZ Keys includes a word prediction algorithm, so I usually only have to type the first couple of characters before I can select the whole word."
That was some quality procrastination ... I understand that he basically have two switches, giving him a total of four combinations, witch is a bit crude.
The face have twenty muscles, Hawking probably can't move all of them, but for a normal person that would mean around one million binary combinations. Or 10^20 combinations if each muscle contraction was measured on a scale 1-10.
Until such a product is released you could start practicing your facial muscles by doing waves with your eyebrows and moving your ears and nose wings etc.
