CAPTCHA is the name of an approach used to distinguish site accesses performed by real humans from robot script accesses.
Usually the pages show fuzzy pictures with letters that the user needs to guess. However there are smart anti-CAPTCHA robots that can also guess what is written in CAPTCHA picture.
This package provides an alternative CAPTCHA solution that consists in using colored boxes that the user must click in order to have access to the protected site resources.
Since this is a new approach, it is harder to break by people that employ common anti-CAPTCHA scripts.
Name: DHTML and CSS CAPTCHA Support forum
Base name: as_snipercaptcha
Description: CAPTCHA validation using colored boxes and AJAX
Version: 1.03.007
Required PHP version: 4.3.0
License: GNU General Public License (GPL)
Detailed description
This class can be used to implement CAPTCHA validation using colored boxes that the user must click which are validated using AJAX requests.
It renders a grid of boxes on which only one box is colored differently to indicate the user must click it.
The class sends an AJAX request to the server passing the coordinates of the user clicks until a given number of clicks correctly point to the colored boxes.
Download here
