What is Duo?

Duo is a second factor authentication method used to access all Princeton applications. Using Duo on your phone prevents anyone but you from logging in, even if they know your password. See the Duo Universal Prompt (external link) for more information and instructions.  

How to Setup Duo First Time (I am new to Princeton)

When you log in to a Princeton application for the first time, the Duo setup process will start automatically.  It is best to log in from a computer and have your mobile phone with you.     

1. From a computer, log in to a Princeton application e.g. Path to Princeton, your Princeton email or TigerHub.  
2. When prompted select select Duo Mobile (recommended method for verification).
3. Enter your mobile phone number.
4. Verify ownership by using the "Call me" or "Text me" option.
5. Enter the 6-digit code, click Verify, and then click Continue. 
6. Now, download the Duo app on your phone.
7. Open the Duo App on your phone and add your account.  
8. When prompted, scan the QR Code from the computer screen (you need to allow Duo camera access to scan the QR code)
   1. If you aren't able to scan the QR code, tap Get an activation link instead and then enter an email address you can access from your phone.  (a personal email is acceptable).
   2. This will send the activation link to your email. Follow the instructions in the email to activate the new account in Duo Mobile.   

Difficulties activating?  Contact Information Technology. We can send you an activation link instead. 

Setup Duo Video

First-time Enrollment in Duo (external link)

Duo Remember Me or Trust Browser (90 Days)

Duo's "Trust this browser" is a setting that gets saved in your browser's cookies. This means that if you check the "Trust this browser" box, and use the same computer and browser, you won't have to verify your identity with Duo for 90 days. There are two ways to Trust Browser for 90 days.

Be sure you have cookies enabled on your device.  Safari users may also need to enable cross-site tracking. See Fix Common Browser & Cookie Issues

Push Yes, trust browser on the Trust this browser

Or, on the Check for a Duo Push screen, check "trust Browser" 

Forget Browser

If you don't want to trust that browser again, uncheck the Trust browser box before you approve the Duo Push or phone call request or enter a passcode.

How to setup Duo if I have a new phone, same number

I have the same phone number and my new phone, but I don't have my old phone or a back-up device.

1. Download the Duo app to your new phone.
2. From a computer, log in to a Princeton Application.
3.  When the Check for a Duo Push screen appears, allow it to timeout.
   
   
   
   
4. Click I got a new phone link
5. Click Text me a link button
   
   
   
   
   
   
6. On your phone, click the link sent by Duo.
7. Duo app will open and Display Princeton University account and add it to your phone.

I have the same phone number, my new phone AND my old phone.

1. Log in to a Princeton Application.
2. On the Check for a Duo Push page, click the Other options link.
3. Navigate to Manage devices at the end of the list.
4. Click Manage devices to enter the device management portal.  
5. On the Verify screen, select the verification method. Verification will be sent to your old phone.
   1. Verify your identity with your old phone via the Duo Push, text or call method.
6. You will see a message, "sending you to the devices page," and will be taken to the Duo Device Portal.
7. Select the Add a device tile.  Add your new phone.

For more detailed step-by-step instructions read Add Another Device/ Verification Method (external link).

How to setup Duo if I have a new phone number

Please contact Information Technology if you have a new phone number to associate with Duo. For security, we will ask you to present a form of identification, such as your drivers license, to support this process. 

Reactivate Duo Mobile on my phone

Reactivate Duo Mobile for an Existing Device (external link)

Add a Backup Duo Device

Just in case you lose or forget your phone, it is a good idea to have a back-up Duo method. You can add another device as a back up method such as your iPad or another phone line.

1. Log in to a Princeton Application.
2. On the Check for a Duo Push screen, click the Other options link. The Other options to log in screen will appear.
3. On the Other options to log in screen, scroll down to Manage devices at the end of the list.
   
4. Click Manage devices.
5. You will be asked to verify your identity, like you do for a normal Duo verification process. Select your verification e.g. Duo Push and verify.
6. You will see a message, "sending you to the devices page," and will be taken to the Duo Device Portal 
7. Click the Add a device tile to add a device.