NOTE: This mod is now unsupported. SMF 1.1 has a CAPTCHA as standard, and you may install the  Advanced Visual Verification mod by HarzeM to get a more advanced CAPTCHA system

This MOD enables CAPTCHA-based code verification for SMF. Basically, this means that when a guest tries to register or sign-up, they need to enter in a code displayed in an image. This prevents bots from signing up, and also prevents bots posting in topics (if you have guest posting enabled).

Screenshots: (click to see a larger version)

Forum Registration page:


Replying to a post as a guest:



Configuration screen:


Please tell me what you think. As this is only a beta version (it's the first release), there may still be bugs in it. Please report all bugs, so I can improve it.

Version: 0.1 (Build 1)
(c) 2006 DanSoft Australia: http://www.dansoftaustralia.net/
Tested on SMF 1.0.5, 1.0.6 and 1.1 RC2

Based on HN Captcha (c) 2004 Horst Nogajski (http://hn273.users.phpclasses.org/browse/package/1569.html)

SMF CAPTCHA 0.1 Install.zip 66.27 KB

SMF CAPTCHA 0.1.1.zip 69.87 KB

Manual installation info 1.0.5 1.0.6 1.0.7 1.0.8 1.1 RC2