Yeah... CAPTCHAs, the Internet's side effect. And the most popular one? Google reCAPTCHA! But after all these years of eye-popping try-to-solve process, it seems that we (the unwilling volunteers) eventually helped Google to digitize the majority of old books. And Google came back with a new announcement that reCAPTCHA times are gone, time for noCAPTCHA!
No CAPTCHA, No frustration, and everyone stays happy!
As Google announced, they figured out a new human-friendly bot-hostile way to determine actual humans from bots, and this way is called "No CAPTCHA reCAPTCHA" and it will look like this:
Some times though, this new API will not be able to 100% determine if the client is a bot or a human, therefore it will pop ye good old reCAPTCHA:
Moreover, the new API will have a mobile-friendly version and instead of the classic reCAPTCHA, it will pop a new vision CAPTCHA:
Which seems to me that Google puts books aside and tries to staff new volunteers to help train their already-powerful image recognition engine to do wonders. But again, what do I know...