>Anyone has used those auto generator engines to generates a number or a string into an image, which we can then use on Web form to ask the user what he sees, so to add additional security to the Web site? I would like any recommendation on that and also as to know if a free version is available somewhere that can do this job?
Most can still be manipulated. But look up: CAPTCHA
http://www.skapadmin.net/forum_posts.asp?TID=223(free stuff at the bottom)
forgot this:
http://www.captcha.net/captchas/
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.·`TCH
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