Class : Habitué
Posts : 83
Registered on : 02/05/2011
Off line
From what I gather you want to make a driver sleepalarm based on headtracking.
I think you should take a look at FacetrackNoIR as well as a driver doesn't need to wear an IR device for it, though it might not work properly in low light conditions.
As for you other questions, I'm not very knowledgeble about Freetrack myself so I can't help you there.