reCAPTCHA
Company
A company founded by Luis von Ahn that used CAPTCHA technology to digitize books and was later sold to Google.
Mentioned in 2 videos
Videos Mentioning reCAPTCHA

Luis von Ahn, Co-Founder of Duolingo — How to Be (Truly) Mission-Driven, 10x Growth, and More
Tim Ferriss
A company founded by Luis von Ahn that used CAPTCHA technology to digitize books and was later sold to Google.

Luis Von Ahn Interview (Full Episode) | The Tim Ferriss Show (Podcast)
Tim Ferriss
A second iteration of CAPTCHA that also helps digitize books by using human users to decipher words computers can't recognize. It was later sold to Google.