Learn About Duo Multifactor Authentication Methods

Duo adds an additional layer of security when you sign in to a TU system by requiring the use of a second device such as a smartphone or landline. Various ways to authenticate using these devices include the following:

• Duo Push displays an alert message on your smartphone/tablet screen using the installed Duo app. Select Approve on your smartphone/tablet to complete the sign-in on your computer. This is the recommended method.
• Call Me makes a call to your mobile or landline phone; press 1 on your phone's keypad to complete the sign-in on your computer.
• Passcode sends a text message containing a numeric code; enter the code on your computer to complete the sign-in.
   

Use Duo to authenticate

1. At the Choose an authentication method prompt (pictured below), select the device you wish to authenticate with from the Device drop-down menu.
   
   
    
2. Authenticate using one of the three methods represented by the green buttons.
    

Send Me a Push

1. Select Send Me a Push to display a notification on your smartphone/tablet screen.
2. Select the notification — unlock your device if necessary — to open the Duo app.
3. Select Approve to complete the sign-in on your computer. If you were not expecting a push, select Deny.

Call Me

1. Select Call Me to ring your mobile or landline phone.
2. Press the 1 key on your phone's keypad to complete the sign-in on your computer. The call will automatically end after the key press.

Enter a Passcode

1. Select Enter a Passcode to send a text message containing numeric codes to your smartphone/tablet (as pictured below).
   
   
    
2. Enter the first code (highlighted in the previous picture) on your computer to complete the sign-in. You may use the other passcodes at a later date.
    

Have Duo remember you

When using Duo to authenticate web applications such as PeopleSoft or Microsoft 365, you might see a checkbox labeled Remember me. As long as the computer is not a public or shared machine, you can select the checkbox.

In certain situations, selecting the Remember me option may require additional action.

• Mobile Device - If the Remember me checkbox is covered by the on-screen keyboard or otherwise not visible, minimize your keyboard or swipe to see the bottom of the authentication box.
• Computer/Mobile Device - If you have configured Duo to automatically call your phone or send a push notification, the Remember me checkbox may be grayed out when the Duo prompt first appears. To access the option, do the following:
  • Push Notifications
    • Select Cancel when the Pushed a login request to your device blue bar appears.
    • Select Dismiss when the Authentication request canceled message appears.
    • Select the Remember me checkbox and choose an authentication method.
  • Call Notifications
    • You must Decline the phone call.
    • Select Cancel when the blue bar appears.
    • Select Dismiss when the Authentication request canceled message appears.
    • Select the Remember me checkbox and choose an authentication method.