I've tried head tracking devices and found my neck and shoulders get stressed. I imagine the same thing would happen hunched over a trackpad with the nose. The small neck movements are similar to head tracking.
Check out the Imak SmartGlove with Thumb, I can't use a computer without it. Well, of course I can but it is much less comfortable. The glove plus a Kensington Expert Mouse (which is actually a trackball with a scroll ring) plus a good chair (eg Steelcase Leap) will help a LOT.
Check out the Imak SmartGlove with Thumb, I can't use a computer without it. Well, of course I can but it is much less comfortable. The glove plus a Kensington Expert Mouse (which is actually a trackball with a scroll ring) plus a good chair (eg Steelcase Leap) will help a LOT.