Daniel Chatfield - 4 Years, 1 Month, 1 Week, 1 Day, 13 Hours, 6 Minutes ago said
This is a simple captcha alternative design for my site. The user has to get the colour correct three times to be verified. They are allowed 3 incorrect attempts before lockout. I know it would be possible to write a computer program which could analyze the content of the images to do it but it is for a feature request form - doesn't need to be as secure as a recaptcha.