The ideal mouse?

Apparently, researchers have been able to train paralyzed people to move a computer cursor by thinking about it; even better, they have been able to do this by monitoring the brain's energy just outside the scalp, not requiring any surgery [although I would guess that it may require shaving your head, although that is not mentioned]. The article talks about its potential solely to paralyzed people, but I can imagine something like this being very useful once it reachs a stabler level. It has to be less conducive to developing carpal tunnel than using a mouse is. [Hat tip: TIA Daily]