head movement in game can be done with this little progam http://nipg.inf.elte.hu/headmouse/headmouse.html
using a webcam in a similar way like trackir does.After installed and set the camera start rfactor and when on track use U to activate it and D to reset to centre.
It will eat some fps , but it's funny
screen shot will not help to understand how it works.
The webcam just track you head movement so , for example , when you turn your head to left you visual in game will look to your left too.
It does the same thing as "trackir" does, but in a less precise and more poor way.
It works for moving your mouse pointer on desktop too, and this should have been its main use.