Affordable Eye Tracking Solution

I am asking everyone who reads this to spread the word about an affordable do-it-yourself eye-tracking device a smart kid is developing.  It is only $300 and can be used to give quadriplegics the ability to move a cursor just with their eyes (commercial systems to do the same can be 10K or more).  The software for it is open-source so I anyone could improve upon/add apps to it. He is soliciting donations to make a production run of these at his Kickstarter page.