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Re: reCAPTCHA implementation problems

From: Gregory J. Rosmaita <oedipus@hicom.net>
Date: Fri, 13 Jul 2007 11:09:13 -0400
To: "Gez Lemon" <gez.lemon@gmail.com>, "Ben Maurer" <bmaurer@andrew.cmu.edu>
Cc: wai-xtech@w3.org
Message-Id: <20070713150848.M22403@hicom.net>

aloha, all
CONSERVATIVE, n.  A statesman who is enamored of existing evils,
as distinguished from the Liberal, who wishes to replace them 
with others.         -- Ambrose Bierce, _The Devil's Dictionary_
             Gregory J. Rosmaita, oedipus@hicom.net
  Camera Obscura: http://www.hicom.net/~oedipus/index.html

---------- Original Message -----------
From: "Gez Lemon" <gez.lemon@gmail.com>
To: "Ben Maurer" <bmaurer@andrew.cmu.edu>
Cc: "Gregory J. Rosmaita" <oedipus@hicom.net>, wai-xtech@w3.org
Sent: Fri, 13 Jul 2007 10:06:59 +0100
Subject: Re: reCAPTCHA implementation problems

> Hi Ben,
> On 12/07/07, Ben Maurer <bmaurer@andrew.cmu.edu> wrote:
> <quote>
> I'd love to hear comments about how the different screen reading
> products handle Javascript. As was mentioned in my reply to 
> Gregory, when working with T.V. Raman on his windows computer, 
> we found that the screen reader didn't see the javascript 
> generated content (despite the fact that Javascript was actually 
> executing, as I could see on the visual copy of the page). T.V. 
> mentioned that he was unfamiliar with the Windows screen reading 
> technology, and that he wasn't sure what the issue was. </quote>
> Some screen readers, such as JAWS, take a snapshot of a web page 
> when it's loaded so that they can use their own cursors to allow 
> users to interact with the content. The snapshot usually isn't 
> updated until a navigate event is raised, although there is 
> usually a command that screen reader users can use to update the 
> snapshot (Insert+ESC in JAWS). If the script doesn't raise a 
> navigate event (such as loading a dummy resource in a hidden 
> IFrame), then the screen reader won't know of the new content 
> without the screen reader user becoming suspicious that 
> something should have happened and refreshing the view themselves.
> Looking at the example page [1], I couldn't work out how to 
> access the "Get new challenge", "Get audio challenge", and 
> "Help" links using the keyboard alone.
> [1] http://recaptcha.net/fastcgi/demo/recaptcha
> Cheers,
> Gez
> -- 
> _____________________________
> Supplement your vitamins
> http://juicystudio.com
------- End of Original Message -------
Received on Friday, 13 July 2007 15:09:35 UTC

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