Don't use this for anything practical. There's a finite amount of band images. It wouldn't take long for a Turing Farm to crack them all. http://blog.codingh

Don't use this for anything practical. There's a finite amount of band images. It wouldn't take long for a Turing Farm to crack them all. http://blog.codinghorror.com/captcha-effectiveness/ http://blog.codinghorror.com/captcha-effectiveness/