MediaWiki:Twofactorauth-text

This allows you to enable or disable two-factor authentication. If you are enabling two-factor authentication, scan the QR code below (or enter the secret manually) into your device. Then enter a token in the field to verify. If disabling two-factor authentication, enter a token in the field to verify and disable.

You will need an app like Google Authenticator to generate tokens for you. Although it's designed to work with Google's two-factor authentication, it will work with StarTrekGames Roleplaying Wiki's too. Install the version of Google Authenticator relevant to your device, and scan the QR code below to automatically import the necessary settings.