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Re: keep CAPTCHA out of HTML5

From: Gregory J. Rosmaita <oedipus@hicom.net>
Date: Thu, 18 Mar 2010 23:39:08 +0000
To: Matt May <mattmay@adobe.com>, David Singer <singer@apple.com>, public-html-a11y@w3.org
Message-Id: <20100318232528.M43133@hicom.net>
aloha, matt!

you articulated something i've been pondering ever since i sent 
the post that started this thread:

> I believe that it is a unique enough use case, and is used 
> frequently enough that a case could be made for a "captcha" role 
> on img. That would give UAs and assistive technologies a chance 
> to call internal or cloud-based CAPTCHA solving systems like 
> Webvisum, and validation/eval tools to mark them as an 
> accessibility issue.

i give this suggestion a strong plus 1 -- it is similar to the 
"math" role in ARIA which can be used to call a helper application 
or plugin bridge for assistive technologies to properly and 
multi-modally render MathML, which is a nod towards the reality
that at least 95% (and probably 99%) of all users who use an 
assistive technology can only access MathML through a a third 
party plug-in, such as those developed by W3C consortium member, 
Design Science:

http://accessiblemath.dessci.com/
http://www.dessci.com/

and, yes, on the point of providing guidance in HTML5, i support 
that too -- as mark twain observed, "The more things are forbidden, 
the more popular they become" which strikes me as a pretty good 
summation of the gordian knot presented by CAPTCHA 
self-perpetuation...

gregory. (hoping you and everyone else at SWSX is having a grand
ol' time)
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CORPORATION, n.  An ingenious device for obtaining individual
profit without individual responsibility.
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Gregory J. Rosmaita, oedipus@hicom.net
         Camera Obscura: http://www.hicom.net/~oedipus/
Oedipus' Online Complex: http://my.opera.com/~oedipus/
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Received on Thursday, 18 March 2010 23:39:40 GMT

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