That is a tough question because when you say no physical movement, are you including the ability to be able to speak as well?! But if not then, there is technology that is voice actived for the physcially handicapped to use. If the person can not even speak I think there is a device that can read a person's eye blinking and the number of blinks means different things.
Thats neat. I was thinking about a student who may have no physical movement but could speak. I'm that there are voice activated systems that could be used.