Wikipedia
NuCaptcha
NuCaptcha is an early fraud detection service which utilises behavior analytics to provision threat appropriate, animated video CAPTCHA's. NuCaptcha is developed and operated by Canadian-based firm, NuData Security.
Static image-based CAPTCHAs are routinely used to prevent automated sign-ups to websites by using text or images of words disguised so that optical character recognition (OCR) software has trouble reading them. However, in common CAPTCHA systems, users often fail to correctly solve the CAPTCHA 7% - 25% of the time. NuCaptcha uses animated video technology that it claims make puzzles easier for humans to solve, but harder for bots and hackers to decipher.