How to enroll a YubiKey for Duo 2FA
    Using the Duo Mobile app with your smart phone is the recommended method for Two-Factor Authentication (2FA). If you don't have a smart phone, a Security Key like the YubiKey, can serve as your 2nd factor.  To use a YubiKey with Duo, you must have the following:
- A supported modern browser (current versions of Chrome, Firefox, Safari, or Microsoft Edge)
- An available USB port that is the same type as your YubiKey (USB-A or USB-C)
- Your YubiKey
Enrolling your YubiKey
For instructions on authenticating with your YubiKey, please see: 
https://support.ewu.edu/support/solutions/articles/10000059665-how-to-use-your-yubikey-for-duo-2fa