Hey guys, great concept, I really want to use it but it is not completely working. The pictures show up, I can drag them in the circle and everything, BUT I don't need to. I can login without touching the captcha... Might just be a matter of getting the hooks correct.. but right now it offers no security out of the box for me. I'm on WordPress 3.5. I tried two logins, one admin and one regular user (thinking maybe I didn't need the captcha because I was an admin the first time).
I'm using BuddyPress, don't have any other login or registration plugins. I tried to add an option in the backend but didn't understand how to implement that, and I'm a WordPress developer. I'd like to put it on the BuddyPress registration page.
I'd love to help you with this, I've actually already translated most of it to Russian language, and modified your code to include the following line for allowing translation files (and the letting the plugin be translate-able):
load_plugin_textdomain( 'visualcaptcha', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
I put the above line into visualcaptcha.php for translation. I also made the folder /languages/ to hold the language files.
I like that the plugin doesn't require an API like most others, so good job on making it accessible. Allowing translation would be one more step to making it available to more WordPress users. Adding BuddyPress support would be another feature I would expect many people to be searching for. We have been getting spammers signing up and making spammy groups with links in the description.. Please help us implement this properly so we can use this cool thing :)