Maybe I was not clear enough. The touchpad idea depends on the cursor you mentioned, which would have to be more like a few points around an empty space - for example that Predator movie three dot thing might work. It also depends on another button for activating focusing which would have to be also on the handle but under pointing finger. This seems like the most natural, and most intuitive solution to me.Originally Posted by David Cherniack
What I tried to explain is that with touchpad you'd have a non linear realtime control over monitor surface and reaction speed dependent only on your thumb speed (no digital path lag) which in the case of a joystick you'd miss, or it would be unnatural - digitally controlled by strength or angle of pressure, hence limiting. One example which might be close enough is computer gaming world where there is absolutely no chance you can be as fast and precise with a joystick or controller as with a mouse, because mouse is as fast as your hand is. You can also imagine controlling your computer cursor with a joystick.
