circuit cellar did an article on a eye controlled mouse. issue 59 june 1995.
i don'y recall the sensor, but if you don't have access to the article email
me and i will look it up.

michael


At 01:04 PM 6/12/97 +0100, you wrote:
>Hi,
>
>   I'm building a 16C84 based device that uses a headup display and
>want to detect the blinking of an eye for input. One method may be to
>use a minature LED and photosensor to detect the difference in reflection
>as the eye blinks. Has anyone any ideas on the best approach to this
>problem - I'd prefer a method that didn't make me blind, if possible.
>
>              Geoff.
>
>