Luis von Ahn
A researcher at Carnegie Mellon University, principal inventor of CAPTCHA verification technology, and co-founder of Duolingo.
Timeline (last 90 days)
reCAPTCHA was originally developed by Luis von Ahn's team at Carnegie Mellon University; the first generation required users to identify two distorted words, one of which came from text that OCR could not recognize in Google Books scans.
Luis von Ahn founded the language learning platform Duolingo based on the concept of reCAPTCHA.
The CAPTCHA concept was formally proposed in 2003 by Luis von Ahn and others at Carnegie Mellon University, with its original form being distorted text recognition.
All Facts (4)
CAPTCHA was systematically formalized by Luis von Ahn and others at Carnegie Mellon University around the year 2000.
60%UnverifiedreCAPTCHA was originally developed by Luis von Ahn's team at Carnegie Mellon University; the first generation required users to identify two distorted words, one of which came from text that OCR could not recognize in Google Books scans.
50%UnverifiedLuis von Ahn founded the language learning platform Duolingo based on the concept of reCAPTCHA.
50%UnverifiedThe CAPTCHA concept was formally proposed in 2003 by Luis von Ahn and others at Carnegie Mellon University, with its original form being distorted text recognition.
50%