PS3 Eye cam + homemade 3 point clip (USB). I use it flawless with CloD, IL-2 46, ArmA series, even in BF3! You just need a GOOD cam without IR filter. 
 
Seriously, i never understand why people have so much trouble with Freetrack. The software itself is more flexible than TrackIR one. I have multiple profiles for each game, and i just click in the one i want to use. 
 
Variable (and strong) ambient light conditions will influence two solutions, the same way.
		 
		
		
		
		
		
		
		
		
	
	 |