I use a trackIR and linux-track with good success. The only issue is you have to have a reflective dot (or 3) on your head, ideally on the bill of a hat. It i

I use a trackIR and linux-track with good success. The only issue is you have to have a reflective dot (or 3) on your head, ideally on the bill of a hat. It is accurate enough that I have to use the trackpad maybe once a day. I don't think it would work well for drawing or anything like that though ...