Smartphone Options for Duo Authentication

Tags duo

Context

Users who have installed and activated the Duo Mobile app on their cell phones can authenticate by accepting a push notification. The Duo Mobile app also allows you to authenticate using generated login codes, which work even if your device is not connected to the Internet.

Note: If you are looking to enroll in Duo for the first time, please visit KA 344.

Table of Contents

Activating Duo Mobile

If you do not have Duo Mobile installed and activated, follow these instructions to set it up.

  • Using a desktop computer (not a phone), navigate to Office.com or Galaxy.
  • Log in using your UTD credentials. You will then be redirected to the Duo authentication prompt.
  • On the Duo authentication prompt, select Other options.
    • If your browser was set to remember your previous MFA method and bypasses the Duo prompt, please use an incognito/private window.

Image showing the Duo authentication prompt.

  • Select Manage devices and then authenticate using one of your exististing Duo methods.

Image of the Duo Other options page.

  • Once in the Manage Devices page, review the this article for more information on adding a new device. You must select Duo Mobile when adding a device to utilize the functions on this article.

Authenticating via Duo Push

  • To authenticate with Duo using push notification, select Duo Push on the authentication screen.

Authentication Option for Duo Push highlighted in methods

  • You will see a screen with the title "Check for a Duo Push". 
    • In this screen you can see the name/number of the device the Duo Push has been sent to.
    • If you have more than one device with the Duo Mobile app, select the Other options link to choose another device. 

Screen showing Duo is waiting on Duo Push authentication

  • Open the Duo app on your mobile device to see the Push notification and select Approve. 

Authenticating via Login Code

Duo Mobile can generate login codes for authentication even when your phone is not connected to the Internet.

  • Open the Duo Mobile app and find the “University of Texas at Dallas” protected login.
  • Click on Show to see the passcode.
  • Select Refresh passcode to generate another login code.
Note: The passcode generated by the Duo Mobile app is only valid for 30 seconds, after which the app will automatically generate a new passcode.

Passcode generated in Duo mobile app

  • To use the code, go back to your browser and select Duo Mobile Passcode.

Highlighted Duo Mobile passcode option on authentication page

  • Enter the passcode generated in the mobile app in the field shown.
  • Click on Verify to authenticate.

Passcode box for Duo generated passcode.

Print Article

Related Services / Offerings (1)

Duo
Duo is the university two-factor authentication method designed to add a second layer of security to your NetID account. Used to verify your identity using a second factor, such as the Duo Mobile App or a security key, to prevent anyone but you from logging in, even if they know your password.