Standard Captcha images are boring, difficult to read and completely NOT user friendly. Fun Captcha makes it fun to complete a Captcha form while maintaining the core functionality.
Fun Captcha is designed as a game of Tick Tack Toe. The user is presented with an almost complete game and is asked to get 3 X's in a row in one of the following configurations:
User's selection is then submitted to the server and analyzed to ensure a real user in fact provided the input.
It's literally one line of code to generate it:
<?php renderCaptcha(0); ?>
It's also one line to get the result:
<?php success = checkCaptcha($_POST, 0); ?>