This is a motion-based captcha and a nice alternative to your existing captcha (if you're a web developer). It is a Captcha but no twisting, tilting, overlapping, dashing, flying of words to bypass bots. This captcha has a small video in the background and a couple of words flying in the front. As a test to prove that you're a human, you are required to enter only the letters that appear in red which seems to be an easy task since the text is straight forward and clear.

Captchas are used to prevent automated software from performing actions which degrade the quality of service of a given system, whether to abuse or resource expenditure. It is also found active use in stopping automated posting to blogs, forums and wikis, whether as a result of commercial promotion, or harassment and vandalism.