3dcaptcha

A 3d captcha for PHP, using a markov chain for generating easy to type words.

About

3DCaptcha is an easy to use captcha written in PHP. It features:

  • A new approach to captchas, using human's 3D spatial cognition abilities to differentiate from a machine.
  • It uses a markov-chain to generate words that resemble human language and are easy to type.
  • It's easy to deploy.

Screenshot

http://3dcaptcha.googlecode.com/files/3dcaptcha.jpg

Project Information

  • License: GNU GPL v3
  • 22 stars
  • svn-based source control

Labels:
captcha 3d php markov