How to add Yubikey Authentication to Thexyz
To add Yubikey authentication to your account login you must first purchase a Yubikey and then you can get your Yubico API key here. here
To get started, login to your account at: https://www.thexyz.com/account/clientarea.php
Where is says "Hello, your name" at the top right, click on it to bring down the menu and select "Security Settings."
You can click the button to enable Two-factor authentication.
Enter your Yubikey into your computers USB drive and press the button to generate the password.
That's it, your Yubikey has been authenticated, be sure to take note of the pass code in case it is lost.