[games_access] Dwell Clicking and Eye Trackers

Barrie Ellis oneswitch at gmail.com
Sun Oct 10 05:59:02 EDT 2010

Yep, high-quality eye trackers are very expensive. The best ones can cope
with head movements whilst keeping track of what your eyes are doing. Got
some info here:


COGAIN are real experts in it, as is Mick Donegan of
www.specialeffect.org.uk - (take a look at the www.gamebase.info video
section for some examples of Eye Gaze in action).

There are ways to use head-mounted web-cams for eye tracking, but I'm not
sure about their accuracy.

Dwell-clicking is a typical system used for those using things like a
SMART-Nav tracker or Eye Trackers who can't easily trigger a click
otherwise, or simply those with RSI who might be okay to move a mouse, but
find it painful to click.

Got some info here on them with useful links:

Having to use a dwell-clicker does lead to problems with games requiring
lots of clicks, or accurately timed clicks, at the moment.


From: "Michelle Hinn" <hinn at uiuc.edu>
Sent: Sunday, October 10, 2010 3:24 AM
To: "IGDA Games Accessibility SIG Mailing List" <games_access at igda.org>
Subject: Re: [games_access] Rehacare

> Cool, Sandra!


> Yeah, eye tracking devices are pretty expensive and most of those that use

> it are at labs. I'll look for some links I had found a few months ago when

> I was researching it for a project.


> And, yes, "dwell click" is what most people refer to what you describe. It

> has good and bad points -- I'm in a bit of a rush at the moment but if

> others haven't chimed in when I return, I'll post more about the pros and

> cons.


> Michelle


> On Oct 9, 2010, at 3:49 PM, Sandra Uhling wrote:


>> Hi,


>> my first Rehacare. It was very interesting. The main topic is the UN

>> Convention of course.

>> But it does not look very good. They have arguements about some terms and

>> the cities do not work together, of course.... :-(

>> (Maybe they should ask the UN, when they do not understand it?)


>> So time for the good points:

>> Very intersting learning games:

>> http://lifetool.at/


>> They have "standard" accessibility and something I did not new before:

>> "Dwelling": the pointer is moved to the button/place and not moved.

>> After a certain time, this is recognised as "click". = similar to some

>> gesture recognition systems

>> Does Ubisoft also call it "Dwelling" ?




>> Nintendo is interested in games for health, they are open also for input.

>> Well this is my new opinion I got. Maybe I can meet some at the event in

>> Paris,

>> we will see ...


>> They work together with health care companies. And it is possible to give

>> feedback.

>> So hopefully they will look at the information about silver gamer.




>> Seetech is a Eye Control system, but it is very expensive. (13.000 Euro)

>> Are eye control systems expensive? They said it is important that the eye

>> control

>> software runs also in the front. So it works very often not with flash

>> games.

>> The user has to change the action of left and right click via menu. This

>> needs lots of time.



>> One links for Barrie:

>> www.computer-fuer-Behinderte.de They sell standard accessibility

>> hardware and do develop special customer hardware


>> Best regards,

>> Sandra

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