3
In
Frameworks 1.10, a complete CAPTCHA package is available, for both image mode and text mode.
Check the file for usage guide:
http://svn.sourceforge.net/viewvc/xoopschina/Frameworks/captcha/formcaptcha.php?revision=293&view=markup
or check the demo:
http://xoopsforge.com/register.php
http://xoopsforge.com/modules/contact/