CAPTCHA tests are a common means of protecting against bots and spam. But how does it actually work? We explain the magic behind the curtain.
This is a companion discussion for the article “How does a CAPTCHA know that I'm not a robot? - https://www.pcworld.com/article/2360584/how-does-a-captcha-know-that-im-not-a-robot.html” submitted on the community's news feed.
Reply to this topic to share your thoughts on this article.