There are 2 words. The challenge word and the variable word. The variable word can be anything. The challenge word must be typed 100% correctly. There's no 1, 2 or 3 letter minimum. Each challenge word must be 100% accurate.

Regardless of the variable word, this system, at worst, is no less secure than the default CAPTCHA. So there's no concern in that department.

The following is pure speculation, as the exact algorithim is intentionally not divulged:

It's possible that the variable word may have a minimum character requirement as the system may be able to determine the word length while not being able to exactly decipher the actual letters. Again, this is pure speculation on my part.

Hi there.
I am having some trouble using this.

I have made the changes as directed and placed the private and public keys where requested.
I get the following error
"To use reCAPTCHA you must get an API key from http://recaptcha.net/api/getkey"

Am i missing something? Fantastic script btw I cant wait to use it!

I like this, but what if I want the Image Verification border to stay there

I get an error while importing via the product manager...
Database error in vBulletin 3.5.4:

Invalid SQL:

### INSERT QUERY GENERATED BY fetch_query_sql() ###
INSERT INTO plugin
(`active`, `executionorder`, `title`, `hookname`, `phpcode`, `product`)
VALUES
('1', '5', 'Automatically modify register template', 'parse_templates', 'if (isset($vbulletin->templatecache[\'register\']))\r\n{\r\n $find = \' $imagereg\';\r\n \r\n $append = \" <script type=\'text/javascript\'>\r\n var RecaptchaOptions = {\r\n theme : \'\" . $GLOBALS[\'vbulletin\']->options[\'recaptcha_theme\'] . \"\',\r\n tabindex : \" . $GLOBALS[\'vbulletin\']->options[\'recaptcha_tabindex\'] . \"\r\n };\r\n </script>\";\r\n\r\n $vbulletin->templatecache[\'register\'] = str_replace($find, $append . \"\\n\" . $find, $vbulletin->templatecache[\'register\']);\r\n\r\n unset($find, $append);\r\n}', 'recaptcha');

MySQL Error : Unknown column 'executionorder' in 'field list'
Error Number : 1054
Date : Monday, February 11th 2008 @ 02:13:16 PM
Script : http://utahnissans.com/forums/admincp/plugin.php
Referrer : http://utahnissans.com/forums/adminc...?do=productadd

Well, you're trying to run a hack developed for vB3.6 on vB3.5 -- that's what happens. :)

If you're feeling frisky, you can edit the .xml and remove references to executionorder. This in no way guaranteed to work. It shouldn't break anything, however, you should always make backups just in case.

If you don't want to edit the file yourself, I've attached a modified .xml. Simply replace the on in the original archive with this.

Thanks for the quick reply, I think I am going to upgrade to 3.6 first :).

For those who would like to use "Method A" (the register.patch file) to modify their register.php file but do not have shell access (e.g. hosting services that only provide cPanel access), you may find this "trick" useful:

1. Upload the register.patch file to your forum's root directory.

2. Create a plain text file called runpatch.pl with the following contents:


save it, and upload it to your forum's root directory.

3. Change the permissions on the runpatch.pl file that you just uploaded to 0755 so that you can execute the script.

4. In a web browser, type:

http://yourdomain/yourforum/runpatch.pl

The perl script will run, which in turn runs the patch command.

5. Delete the runpatch.pl file from your forum's root directory.

N.B.: This technique assumes that you can run perl scripts with system calls on the server where your forum resides, which is usually the case.

- Dan

A quick mod if you want to restore the "image verification" frame around the reCAPTCHA panel, just like how vBulletin's standard CAPTCHA panel appears:

In the template register find:


and replace it with:


You can also center the reCAPTCHA panel within the frame by adding a "<center>" tag:


- Dan

Thanks, Dan! I've linked your tips in the first post. :)

You mean it's missing in this line, not the other one: