Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!cbnewsl!spf
From: spf@cbnewsl.att.com (Steve Frysinger of Blue Feather Farm)
Newsgroups: comp.human-factors
Subject: Re: Eye Movement Tracker
Message-ID: <1991Jun14.172700.4446@cbnewsl.att.com>
Date: 14 Jun 91 17:27:00 GMT
References: <164661@felix.UUCP>
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 23

From article <164661@felix.UUCP>, by asylvain@felix.UUCP (Alvin "the Chipmunk" Sylvain):
> How about tossing that old mouse into the trash can, and construct a
> device which looks into your eyes while you're reading the screen, and
> can actually track the precise location of what you're looking at?
> 
> Such devices already exist, but they require physical contact with the
> eyeball.  This is undesireable (at least to me!)

They exist in non-contact form.  One design, for example, uses reflectance
of the eye surface to measure eye movements.  

Whether this would be useful in general is a good question.  It might make
people to "aware" of their eye movements, many of which are generally
unknown to the subject.

Reminds me of an old Peanuts cartoon:
	Linus (to Lucy): "Have you ever been aware of your tongue?"
		(he then leaves the room)

	Lucy (getting disturbed look on face): "Argghh!"
		(runs after him holding her mouth)

Steve