CAPTCHA
With the module "CAPTCHA" visitors type the characters of a distorted image before their comment, guestbook entry or short URL is saved. This keeps automated spam robots out.
Compatible with:
The module is included in the script package. Install it in the admin area under Modules, then switch it on in its settings.
How this module works
The module adds an image with distorted characters and an input field to the comment form and to the form for new short URLs. People can read the characters, most spam robots cannot. The form is only processed when the characters have been typed correctly. Otherwise the visitor is asked to try again.
Settings
- Number of characters in the image: 3 to 8, 5 by default
The CAPTCHA can be combined with the other spam protection modules. If you prefer a protection that visitors do not notice, use the module Spam Robot Trap.