You might want to read the link...he's complaining about reCaptcha. The basic complaint is that the ability to recognize letters is no longer good enough to dis

You might want to read the link...he's complaining about reCaptcha. The basic complaint is that the ability to recognize letters is no longer good enough to distinguish human intelligence. We need to identify some other trait that's simple for humans and difficult for computers. Those "home grown" captcha solutions are likely better in this regard from reCaptcha since they don't have the possibly contradictory goal of digitizing books.