Make sure:
  1. Sign on to your Mac machine. You'll see the Authenticating window, prompting you to enter a passcode.

    Screenshot of the Authentication window showing the passcode field.
  2. Generate a one-time passcode (OTP) using your hardware token.
  3. In the Authentication window, enter the OTP and click Verify.
    The green check-mark indicates authentication is successful and your access is approved.

    Screenshot showing the green "Authenticated" success window.
    If you did not get the green check mark, your hardware token may be out of sync. You will see a further authentication window:

    Enter the OTP from your hardware token. Click Sign On. You should see the green check mark shown above.
    You're signed on to your Mac machine.

    A screen capture of the Mac login desktop following successful sign on.