I use that type of Captcha on my WebLog and it works fairly effectively...
It's in the West Wind Web Toolkit for ASP.NET as a WebForms Web Control:
Code:
http://goo.gl/COJ0wDocumentation:
http://west-wind.com/WestwindWebToolkit/docs/?page=_3lh0nfotk.htm+++ Rick ---
>Hi,
>
>Usually I find Captcha on various blog sites very difficult to work with. I can't see well the letters or numbers that are shown in the picture; so I keep clicking on "show another." Recently, however, when I was looking at the blog of an asp.net guru his captcha was very easy to go through. The Captcha would ask a questions such as for example:
>12 - _____ = 7 or
>Eleven + ___ = Seventeen
>
>Basically the math that even I can understand and solve in my head <g>.
>
>Does anybody know if this type of Captcha is available and how do you get it?
