Adding Captcha to Membership Subscription Form

[dave_h]

Hey folks

We have a membership cgi type form that we will like to add captcha image to.

Any help appreciated. Any suggestions on which one to use will also be appreciated.

Thanks
Dave

[perl_diver]

I have no specific recommendation other than search on CPAN and see what is avialable:

[search.cpan.org...]

[too much information]

Honestly, I gave up on the Captcha because every now and then it would goof up and not work and I would get several emails from confused people. (Probably my fault)

But I started using iScramble ( [z-host.com...] ) to encode my form and I have never had a bot get past it. The best part is that every time the page is loaded the form is encoded differently, but the real human user never has any trouble with it.

If a bot can't detect a form at all chances are they are not going to try to feed you any bad data.

[Brett_Tabke]

Is there an Iscramble like util for Perl?

[phranque]

the best technical solution i have found so far is a plugin for wordpress that is implemented in php.
it uses simple math comment spam protection [sw-guide.de].
i think the the key is:

This plugin does not require JavaScript or cookies. It uses a special encryption function; the result of the question is being passed via a hidden field. The result is being compared with the value entered by the visitor – after encrypring this value as well.

i am thinking about trying to do the same thing in perl...