Using a Yubikey with Tranquil SSO Sign into your SSO account here Once you have signed in Click on Signing In,  under the Account Security Heading From the next menu that appears choose Set Up Passkey under Passwordless heading On the next screen click Register   If you get a 1Password popup menu like the below  Click This Icon    The below screen will appear. Select Save another way Select Use a different phone, tablet or security key Now insert your Yubikey and press the button once.  You will be prompted to press the button a second time. Now your key has been added and should work successfully for all future logins.