Google's reCAPTCHA turns "invisible," will separate bots from people without challenges
Google says it can separate man from machine without any tricky tests or checkboxes.
By Ron Amadeo
Google's reCAPTCHA is the leading CAPTCHA service (that's "Completely Automated Public Turing test to tell Computers and Humans Apart") on the Web. You've probably seen CAPTCHAs a million times on sign-up pages across the Web; to separate humans from spam bots, a challenge will pop up asking you to decipher a picture of words or numbers, pick out objects in a grid of pictures, or just click a checkbox. Now, though, you're going to be seeing CAPTCHAs less and less, not because Google is getting rid of them but because Google is making them invisible.
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