This is an alternative option to the standard anti-spam bots (ReCAPTCHA and question-and-answer).
As seen in the figure above, the addon works with the standard setting group captcha for guests and will be used as the registration of users, and in the form of password recovery, and when adding a guest posts.
After installing the XF QapTcha and activate it in your user does not have to parse that is drawn on a picture to enter the correct verification line, as it was with ReCAPTCHA. It's fairly easy to move the slider and the test will be passed.
- Unpack the archive and upload all of the folder "upload" on your forum.
- Importing xml-file from the archive.
- Choose in the settings user registration required option.
As practice - spam bots have not learned to move the bar, so this is a "XF QapTcha" of one of the best in protection and convenience for users, IMHO.