Using your YubiKey USB hardware token
First, log in to your account or access an application that requires authentication. You'll then see the YubiKey Authentication screen prompting you to enter a YubiKey passcode.
You must pair your YubiKey with your account in order to enable authentication.
Next, insert the YubiKey into your computer USB port and then press the YubiKey button. A one-time passcode (OTP) will be automatically generated and inserted into the YubiKey Authentication window.
Ensure that the YubiKey Authentication window is selected before pressing the YubiKey button.
Finally, click Sign On, and you will see a green checkmark icon indicating successful authentication.