Davidson College Knowledge Base Duo Two-Factor Authentication Duo - Add a new device Updated February 15, 2018 21:35 LABELS: two-factor 2FA two factor multifactor Duo Security Duo two-factor authentication We recommend that you add a backup device in Duo in case you forget or lose your primary authentication device. Visit a site that is protected by Duo. Choose Settings in the top right corner. Select Add a new device in the menu. Authenticate the way you might normally. Choose the device you are adding, and enroll your device the way you did initially. If you would like more detailed instructions, see the articles below. Enroll in Duo using a smartphone or tablet Enroll in Duo using a personal hardware token (fob) Comments 0 comments Article is closed for comments.