[Web4lib] Spam-resistant forms service

[Thomas Bennett]

I don't use this myself but I've seen several sites where captcha service is 
used, basic service is free.  Simply put, you have to type in text that is 
distorted in a graphic.



From http://captchas.net/ :

Why http://captchas.net?
 This server provides CAPTCHA images you can use in your web page. CAPTCHA 
images can prevent html-forms or web pages to be used by robots. 
How does it work?
 A CAPTCHA image shows a random string which the user has to type to submit a 
form. This is a simple problem for (seeing) humans, but a very hard problem 
for computers which have to use character recognition, especially, because 
the displayed string is alienated in a way, which makes it very hard for a 
computer to decode. For more information see 
http://en.wikipedia.org/wiki/Captcha. 
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.



Thomas

On Monday 19 June 2006 16:57, K.G. Schneider wrote:
> I feel as if I've asked this before some time ago but can't find the post
> or the responses... and don't remember if the answers helped... or if it
> was all one dream...
>
> I'm (again) interested in a service we could use/license that would provide
> us spam-resistant web forms for suggestions, user comments, etc. I'm not
> interested in an in-house solution-a good canned solution will do. I gotta
> believe these exist.
>
> Karen G. Schneider
> kgs at bluehighways.com
>
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