Luis Von Ahn: Creator of Duolingo, ReCAPTCHA
CAPTCHA Can Ruin Your UX. Here's How to Use it Right
CAPTCHA & reCAPTCHA Alternatives: How to prevent form & website spam without CAPTCHA & reCAPTCHA.
reCAPTCHA | why i hate everything
By typing Captcha, you are actually helping Google. Read how | NewsBytes
Time to Kill Off Captchas - Scientific American
reCAPTCHA - Wikipedia
How to Bypass Google ReCAPTCHA Images - Make Tech Easier
Human Computation and Wisdom of Crowds in Cultural Heritage | Trevor Owens
Madhuka: CAPTCHA vs reCAPTCHA
How to Bypass Google ReCAPTCHA Images - Make Tech Easier
What is the reason behind entering the captcha text in most of the sites? - Quora
Captcha in the Rye (@captcha_rye) / Twitter
Spammers Paying Others to Solve Captchas - The New York Times
Captcha if you can: how you've been training AI for years without realising it | TechRadar
Captchas Have Us Deciphering Old Text Through Woozy Web Clues - The New York Times
The Crossword Stumper - The New York Times
The Evolution of CAPTCHA
Why do we need CAPTCHA? — Quartz
Mrs. Beth Cueni Carnegie Mellon - ppt download
What are Captcha and ReCaptcha?
Captcha
Captcha Considerations | BinaryMist
Method Introduction Evolution reCAPTCHA - Stop Spam Read Books O 100 Million reCAPTCHAsday Were Being Solved Everyday O Equivalent to 25 Million Booksyear O Hence in 2009 Google Acquired reCAPTCHA Re CAPTCHA
Who Made That Captcha? - The New York Times
Humanity wastes about 500 years per day on CAPTCHAs. It's time to end this madness
CAPTCHA - Wikipedia
TIL that reCAPTCHA is really freaking awesome : r/tumblr
