What's a Captchas?

A Dog or a Cat? New Tests to Fool Automated Spammers

Technology
A Dog or a Cat? New Tests to Fool Automated Spammers
By BRAD STONE
Published: June 11, 2007
Several Internet companies, including Microsoft and eBay, are working on new ways to keep spammers from infiltrating their sites.


CAPTCHA

Defined: CAPTCHA is an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart"

Comment: It must be old eyes, but I have a hard time with these! Until I saw the NYTimes article today, I did not know the name of these!