[kh99]

Originally Posted by bosanci28

So may i ask what is the difference between the original captcha and this?

Thanks

Well, just to be sure you understand, this mod just interfaces google's reCAPTCHA v2 with the vbulletin human verification system, and the fact is that the interface isn't a lot different than the original. I didn't implement the captcha and I copied the vbulletin interface code to start with, so I really can't take much credit for it, nor can I explain the details of how the captcha works.

You can read about reCaptcha v2 here: http://www.google.com/recaptcha/intro/index.html . In a nutshell, it uses some javascript magic to try to identify people as human, and if it can then the user only has to check the "I am not a robot" box and doesn't always have to solve a captcha. So hopefully it makes it easier for humans to get past it. I know the original reCaptcha had been "cracked" somehow, and to be honest I don't know if this addresses that problem or not. I do know that google has been telling sites that are still using the original to upgrade, so I imagine eventually they will discontinue support for the original.