In addition to smartphones with the Duo Mobile app and classic hardware tokens, Two-Factor authentication with Duo Security also supports YubiKeys. A YubiKey is an excellent alternative to a classic hardware token. Like a token, no cellular or wifi service is required. However, unlike a classic token, you do not need to key in a one-time passcode. Your YubiKey plugs into any free USB port on your computer and appears to the computer to look like an ordinary keyboard, so no additional software needs to be installed. Simply press the button on your YubiKey and it will enter your one-time passcode for you.
Faculty and staff may obtain either a YubiKey or a Classic Hardware Token from the Helpdesk.
To see a YubiKey in action, watch this video.