U2F (Universal 2nd Factor) is an open standard to allow USB and near field communication (NFC) 2FA devices to interface with web browsers. It is currently only well supported in Chrome. Development is underway by Duo and major browsers to accommodate U2F integration via WebAuthn. U2F authenticators can readily be purchased from electronics retailers, such as Amazon
WHAT HAPPENS IF I LOSE MY PHONE OR MY U2F AUTHENTICATOR?
Devices can be added or removed in the device management portal.
If you are unable to log in to the device management portal at all, contact the IST Service Desk to have the lost device disabled, and to have an alternate added.
You may choose to purchase a token to have as back up should you not have access to your phone.