How CAPTCHA Works
Are you a computer? If you've ever successfully filled in a CAPTCHA on the Web, you're probably not. So what is this test, and what does it do?
CAPTCHA is an acronym that stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart. They're also known as a type of Human Interaction Proof (HIP). You've probably seen CAPTCHA tests on lots of Web sites. The most common… » Full Story on HowStuffWorks
CAPTCHA is an acronym that stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart. They're also known as a type of Human Interaction Proof (HIP). You've probably seen CAPTCHA tests on lots of Web sites. The most common… » Full Story on HowStuffWorks
