ReCAPTCHA is a free offering from Google to protect webmasters against robots and bots designed to propagate spam and abuse online services. Based on the Turing Test, reCAPTCHA uses puzzles or logic ...
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 ...
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