-----Original Message-----
From: Bcab [mailto:bcab-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of Darran
Ross
Sent: 04 April 2013 21:19
To: BCAB Discussion List
Subject: [BCAB] Help Needed for a CAPTCHA Experiment
Please find below an email sent to the JAWS-UK list by Jamie
Cuthbertson. Please consider helping out with the survey.
Darran
Hi all,
Apologies in advance because I realise that this is a little off topic
but it is relevant to all screen reader users and those who find seeing
computer screens difficult.
For most of us, unless we have migrated to Firefox, the encountering of
captchas on the web is often a source of major frustration. A student
at Glasgow University has been doing some work on accessible captchas
and is now looking for blind and partially sighted participants to take
part in his
10-15 minute experiment on line.
There is no money in it but Matt would very much appreciate help from
anyone who is willing to give it a shot. If you are interested, please
go to the following link. The first page on the site is an agreement
page and, if you're happy, you then are taken on to the experiment
itself. The link for the site is as follows:
www.tinyurl.com/audiocaptcha
A brief note from Matt is also below:
"Thank you very much for completing the experiment. I add some
allowances for misspelling of words or getting a word completely wrong,
it's aggravating to users that one small slip will cost them 20 seconds
of having to perform another CAPTCHA.
I've tried some initial tests against automatic speech recognition. Many
of the CAPTCHAs hold up against quiet sophisticated systems, but
eventually the systems can be trained to recognise the voice quite well.
I will need to suggest varying speaker voice in order to complicate this
training further!
The primary goal of this experiment is to show that humans can perform
the task accurately, and it seems they can, much more so than speech
recognition!
If you could advertise this experiment I would be very happy! I'm
lacking in participants that are blind or partially sighted at the
moment. The more participants, the better the evaluation which will help
the research get published. From my reading it seems that the other
researchers in this field have somewhat abandoned it, I think it's
important that the usability, especially for those with visual
impairments become more publicised.
Thanks again,
Matt"
Feel free to further advertise this experiment through your own
networks.
Thanks,
Jamie
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