CAPTCHA can be frustrating, but it's a necessary evil to help prevent spam bots from running rampant on your sites. Google is about to kill off CAPTCHA by simply using a new idea - "Invisible reCAPTCHA". This doesn't require any intervention or interaction by people at all. It uses your browsing history. If something doesn't add up, you may be required to face multiple "challenges", but for the most part it will be quick and simple. I like the idea.
Google has also pointed out that visually impaired users will be offered CAPTCHA in the form of audio. This will be easy to solve for legitimate users but considerably harder for bots. The company has noted that CAPTCHA isn't used only for enhanced security but also for the automated digitization of books and improvements to Google Maps.Source: NeowinClick here to read this article!