What is CAPTCHA and why do i need it?

A CAPTCHA is a challenge-response test designed to ensure that your web forms are being submitted by a human and not a computer or bot. It is used to prevent automated software from performing actions which degrade the quality of service of a given system, whether due to abuse or resource expenditure. An example would be an automated application that creates accounts on your forum/website or attempts to use your email contact forms or feedback forms.

Whilst not infallible, CAPTCHA images add an extra level of protection to make your site less attractive as a target.

NOTE: D2 CAPTCHA is a free application provided as-is and without any warranty or support. You use it at your own risk and D2 Computing Ltd do not provide or imply any guarantee of functionality. Whilst we will not reply to any support requests for this application, you are welcome to post any question or comments in our forum at: http://forum.d2sitelock.com .