One of the Internet's necessary evils is about to get worse in the name of Facebook security.

Facebook to Make Captchas More AnnoyingI'm talking about Captchas, those little forms you've got to fill out when a website thinks you're a nefarious bot. We've all seen the most basic type of Captcha -- a set of scribbled words, usually nonsensical, that you must type out to prove your humanity -- but now Facebook has cooked up a different method that makes you identify friends based on their profile pictures.

The so-called "social authentication" kicks in when Facebook suspects malicious activity -- for instance, if you try to sign in from different parts of the world in the span of a couple hours. You'll then have to identify a few friends through multiple-choice questions to access your account.

More: http://www.pcworld.com/article/217844/