ClickCaptcha is one of the Captcha (Completely Automatic Public Turing to Tell Computers and Human Apart) to stop spam, by click your mouse on right pattern. Images below is live example of ClickCaptcha. You can learn how to use it in Here and don't forget to give comment!
And you can download the free source Here
Why using ClickCaptcha ?
Basicly CAPTCHA is an image that has letters and numbers, and ask user to type value of the touring test that contain letters or numbers on image.
Don't you know that users sometime feel hard to read and understand the letters or numbers on Captcha? And how they know what to type in text box?
Don't you know that Captcha still available to break out, by using OCR techniques. It's the way to guest key or letters and numbers in Captcha. Or may be using BruteForce Attack.
Extract file below after you copy into your system and read the tutorial Here
All source code By Diand
contacts :
dian.armstrong@gmail.com | YM : di_armstrong