EyeWriter
A few months ago there was a post on this blog whose subject was making graffiti via eye-tracking (by a person who is afflicted by ALS). Anyway, the post informed us that the technologies used were open-source and low-cost and about to be publicly released.
So behold the Eyewriter. The site offers a great overview of the technologies used and and how all of this works. Very reminiscent of multitouch technologies (FTIR anyway).
Says the website:
It is a low-cost eye-tracking apparatus & custom software that allows graffiti writers and artists with paralysis resulting from Amyotrophic lateral sclerosis to draw using only their eyes.
All truly inspiring and generally awesome. Check it out.
The EyeWriter site: http://www.eyewriter.org/
Developed by openFrameworks, F.A.T. and the Graffiti Research Lab.