Captcha plug-in is used for Joomla forms to add human-computer interaction captcha function to prevent spam code to automatically submit forms to Joomla website, which has completely replaced the Google captcha plug-in. SixE verification code plug-in form protection is very simple, after the plug-in installed this verification code can automatically match the form function. Available in Joomla forms, user registration forms, contact forms, and all forms of forms environment.