Extension:KeyCAPTCHA

KeyCaptcha is a visual CAPTCHA extension that relies on KeyCaptcha's own website. Registration on the website is required, where one of four plans (free with ads, KeyCaptcha pays site owner for ads, owner pays KeyCaptcha (no ads, allows customization of the visuals), or a combination of the former 2) may be chosen. KeyCaptcha CAPTCHAs are jigsaw puzzles of images that only humans should be able to solve.

Installation

 * 1) Register on and log-in to
 * 2) Add your site URL on "My Sites" page (note that you can add many sites to protect under the same account).
 * 3) Choose MediaWiki from "CMS" dropdown. Choose the version of your MediaWiki.
 * 4) Choose "Installation Instructions" in the right menu "Free Account".
 * 5) Follow KeyCAPTCHA installation instructions on the opened page.