Cheap TrackIr?
 

I remember a post in these forums at one time describing someone's efforts to code an app that would use a webcam to track the movement a person's forehead, using a dot stuck to their head. I can't find anything relating to this using the search. Does any one know of (free) pre existing programs or code that would do this for me?
Otherwise, what would be involved in coding this up myself?

Re: Cheap TrackIr?
 

Well, if you're doing it yourself, I'd recommend you do it in Python. The VideoCapture module (http://videocapture.sourceforge.net/) makes capturing images from a webcam pretty darn easy (a bit slow though, there are probably better alternatives out there, i just haven't used any of them) and the Python Imaging Library (http://www.pythonware.com/products/pil/) is excellent for working on graphics.

I've been interested in similar things lately, if i make any significant progress over the next couple days I'll happily share the code with ya.