Note: This is an add-on for Restrict Content Pro. Version 1.1.2 or later is required to use this add-on.
With this add-on, you can add a simple math verification field to your membership registration form. In order to signup, the user must complete the simple addition problem.
This add-on is designed to completely prevent bot registrations, while still presenting a very human-friendly and easy-to-use registration process, unlike the experience users have when trying to fill out difficult-to-read reCaptchas.
Check out the registration page at Pippin’s Plugins to see the math verification in action. You can test it by simply clicking “Register” without filling out any of the fields.