Don't you hate those CAPTCHAs that leave you squinting at the screen in irritated bewilderment? Here are some systems that are a little more user friendly.
CAPTCHA — or Completely Automated Public Turing test to tell Computers and Humans Apart — is that test that you'll find on some websites to verify that you're not a spam bot. Most of the time, you'll be typing a sequence of letters into a box. This is not a hard thing to do, you would think, until you get something that looks like this.
There are a few other systems out there that are much more friendly to the average user — some creative, some bare bones, but all minus that irritation of having to constantly click the refresh button. Here are some of our favourites.