[isaiahg]

This would be awesome for people who are disabled. Voice input is still a pain and only works with a limited number of applications. If you could somehow switch between keyboard and tracking for the mouse pointer, this could give full use of a computer to many people.

[twic]

Dasher was developed largely with disabled people in mind. Have a look at the various human interface devices you can dash with:

https://help.gnome.org/users/dasher/unstable/specialneeds.ht...

http://www.inference.eng.cam.ac.uk/mackay/abstracts/OneButto...