Learning Languages with CAPTCHAs
by Radmila Gurkova
httpv://www.youtube.com/watch?v=cQl6jUjFjp4
The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Humans Apart) was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas Hopper and John Langford of Carnegie Mellon University. Luis - the man who brought you the word CAPTCHA and reCAPTCHA, now unveils his newest a...