3D based CAPTCHA is finally getting some heat

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart), self explanatory, is a method of verifying whether the user of a web application is a human being or a malicious computer program (known as bots) trying to register, post garbage data etc. onto a site. Some of the most common examples of CAPTCHAs are wavy lines overlaying some distorted images. You would generally see them when you are registering for an account on a web-site, or posting some information. Lately these CAPTCHA's have been compromised using intelligent character recognition techniques... So, now, these days a new CAPTCHA mechanism is gaining heat i.e. 3D images based which would not be easy to break, not with existing technologies...

Infact one of the upcoming social sites is already using it - check out YOUNITI (as in unity).