Again we don't use it, the responses make an excellent
point on
accessiblilty. And actually, even the prerequisite of a
user with normal
vision doesn't always work. I've been to some sites where
I couldn't make
out the text in the graphic and my sight is fairly normal.
But after failing
the form usually reloads with a different graphic. Thomas
Dowling's
suggestion makes more sense for normal and impaired users.
Thomas
On Tuesday 20 June 2006 09:20, Thomas Dowling wrote:
> On 6/20/2006 8:57 AM, Thomas Bennett wrote:
> > Prerequisites?
> > To use this technology, your web pages have to be
generated dynamically
> > by any programming language like PHP, JSP, Python,
ASP, Perl. To encode
> > the password the Message Digest Algorithm MD5 is
required. It is part of
> > most of the named languages or can easily be
installed.
>
> Of course, another prerequisite is a user with
"normal" vision (for some
> definition of normal). Last time I checked, audio
CAPTCHAs weren't
> really ready for prime time, and the CAPTCHA sites
I've seen basically
> tell blind users to forego the form and send them
e-mail.
>
> I've often wondered why there aren't cognitive
CAPTCHAs like "Select the
> option that doesn't belong: beagle, collie, dachshund,
eggplant" or "How
> many fingers do most people have?"
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