PHPBB3 - Enabling Captcha during Registration
This demo will show you how to enable captcha visual confirmation during the PHPBB3 account registration process.
[1] Log into your PHPBB3 administration control panel
[2] Click on the ""Visual confirmation settings" link which is under the "BOARD CONFIGURATION" section
[3] Make sure that "Enable visual confirmation for registrations" is set to Enabled
[4] Make sure that "GD CAPTCHA foreground noise" is set to Yes
*Note: This will vastly increase the effectiveness of your captcha
[5] Click the "Submit" button to finish enabling captcha