[Web4lib] Spam-resistant forms service

[Thomas Bennett]

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?"