You can add mathematical captcha on different forms such as Contact form, Create User, Forgot Password, Product Review form, Email to a Friend form. The user can choose one, more than one or all mathematical operations in a captcha for better security.
Math Captcha Extensions allows you to add mathematical captcha (Addition, multiplication, Subtraction, and division) on the forms.The Admin has the functionality to enable or disable this extension through the Magento backend. This extension is very easy to use and it does not require any technical skills. The admin can hide captcha for logged in user through the backend.
