Re: Going from simple to super CAPTCHA

Robert , Thank you for replying.

No, PHP can do it. If you can work with pixels (and you can) then you can do any advanced mutation of an image... the only issue is how long it takes to perform the mutations. That's good to know. I think I can live with a little server time to generate the images, so long as they work well.

Check out the freecap code perhaps I'm assuming you mean this one:

http://www.puremango.co.uk/cm_php_captcha_script_113.php

Good CAPTCHA - bots can't figure it out Bad CAPCTHA - bots can figure it out Well, yes, but what exactly determines that is not obvious to me. I came across this page:

http://sam.zoy.org/pwntcha/ ... which conveys a feeling that some CAPTCHAs that look good actually aren't. According to this page, the Yahoo CAPTCHA image, which looks quite minimal to me, is actually one of the better ones. -- Dave M G Ubuntu Feisty 7.04 Kernel 2.6.20-15-386