Sometimes we often encounter some little boxes which says 'CAPTCHA'. Well, these are the boxes which serves as a medium to determine whether the user who is interacting is actually a Human or not.These CAPTCHA's serve as a medium to stop spam to some extent. But with Google's reCAPTCHA free service will help to differentiate robots and Humans, and also helps to digitize some texts which are enable to read for computers. Means, you are shown two images, one image is used for differentiation and other one is for digitization.
Now, Google has updated reCAPTCHA system with advanced risk analysis techniques, where user's engagement before, during and after of CAPTCHA usage is taken into consideration.
So, by using this reCAPTCHA service, you are helping books to digitize. You know, about 200 million CAPTCHA's are solved by humans around the world every day and these little puzzles consume more than 150,000 hours of work each day. That's very much time! For this reason always use reCAPTCHA system on your website if you are in need of CAPTCHA system.
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