Posted by Gustavo Narea on 11/11/05 16:47

Hello.

Richard Lynch wrote:
> On Thu, November 10, 2005 10:45 am, Gustavo Narea wrote:
>
>>CAPTCHA tests are indispensables. The problem comes when you *only*
>>use
>>visual tests (such as "visual turing numbers").
>>
>>If you need CAPTCHA tests, you may use them both visuals and audibles.
>>This is a good example: https://www.e-gold.com/acct/login.html
>
>
> So the user who is both blind AND deaf?
>
> Or the blind user who is at a library computer with no audio output?

You may find many possible solutions on the web-page I suggested. For
example: Logic puzzles
<http://www.w3.org/TR/2003/WD-turingtest-20031105/#logic>.

As I said previously, It depends on the target of your website. For
instance, if your website is for web designers, you may only need to use
visual turing numbers: They must have a user agent which is able to
process images and I cannot imagine a blind web designer.

On the other hand, if your website is for programmers, you may want to
know that programmers can be blind (although you won't take this into
account): http://www.blindprogramming.com

> I saw some research where out of four people with "normal" hearing,
> all four were unable to distinguish the crappy audio output into the
> correct word and use a site.
>
> Granted, a very small sample, and the audio from the test site may
> well have been at the low end of the spectrum for quality. But it was
> a real site, and these were just regular people roped in for a test of
> the audio's usefulness.
>
> As "cool" as CAPTCHA seems at first, I don't think it's going to be a
> long-term solution.

In the meantime, I think It's the best we can do.

Best regards.

--
Gustavo Narea.
PHP Documentation - Spanish Translation Team.
Valencia, Venezuela.

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