CAPTCHA validation has become a widely adopted method to prevent that people use robot scripts to abuse from Web site content or services.
It uses images with fuzzy text to make it more difficult for robots that attempt to automatically read the text that is written. Meanwhile, several techniques have been developed to discover the text in the CAPTCHA validation images.
This demo provides a more advanced solution that employs animated images to render the verification text.
It raises the bar in terms of the difficulty that it imposes to robots, as the actual text is never completely displayed in each of the animated image frames.