Duo / Enroll a secondary device or a new phone for use on an existing Duo account

Objective

• To provide instruction on setting up and enrolling an additional device for use on an existing Duo account
  • Add a second device to an existing Duo account
  • Add a tablet to an existing Duo account
  • Add a mobile phone to an existing Duo account
  • Add a hardware token to an existing Duo account
• To provide instruction on enrolling a new phone for use on an existing Duo account

User

• All current Miami University Students, Faculty, and Staff, plus Alumni, Retirees, and Emeriti are required to enroll in Duo

Environment

• 312306: Duo Security Two-factor Authentication
  • Duo Mobile App
    • Android, iPhone, or Windows smartphone
    • Android or iOS tablet
• Mobile Phone (cell phone other than a smartphone)
• YubiKey 4 or 5 Series Security Key
  • YubiKey hardware token
  • U2F hardware device
  • U2F authenticator
  • U2F security token

Rationale

• After you've enrolled your primary device for use with Duo Security, MUIT recommends that you add a second device to your account. This will give you the ability to log in to your applications if the device you use regularly to authenticate is damaged, lost, or forgotten
  • You must be enrolled in Duo before you can add a secondary device
• Duo works with your smartphone, mobile phone, tablet, or U2F hardware token and supports a variety of authentication methods

Resolution

After initial enrollment

• You must follow these KB instructions to access Duo's Self Service Portal — you cannot access Duo's My Settings & Devices by direct URL

Add an Android, iPhone, or Windows smartphone (Duo Mobile)

1. In Duo's Self Service Portal on your computer, select Duo Mobile as the type of device you want to add
2. Enter the area code and phone number of the smartphone you want to enroll
   • Click the Continue button
3. Check the box to confirm that you have entered the correct phone number 
4. Confirm that you have ownership of the phone number by clicking the Send me a passcode button
5. Enter the passcode sent to your phone and click the Verify button
6. Download and install the Duo Mobile app on the smartphone you want to enroll
   • Go to the app store for your device and search for Duo Mobile (not the Google Duo app!)
   • When prompted, allow Duo Mobile to take pictures and record video
7. Click the Next button
8. Confirm that the Duo Mobile app is installed on your smartphone and click the I have Duo Mobile Installed button
9. Locate the QR code in the activation window
10. In the Duo Mobile app on your smartphone, tap the + (plus-symbol) button
11. Hold your phone to your computer screen so that your device camera can scan the QR code 
    • A check mark indicates that you successfully scanned the code
    • If you cannot scan the QR code, click the Or have an activation link emailed to you instead link and follow the instructions
12. Click the Continue button to complete the addition of your device
13. Look for your new device 

Add an Android or iOS tablet (Duo Mobile)

1. In Duo's Self Service Portal on your computer, select Duo Mobile as the type of device you want to add
2. Click the I have a tablet link below the Continue button
3. Click the Continue button
4. Select the type of tablet that you want to enroll: iOS or Android
5. Click the Continue button
6. Download and install the Duo Mobile app on the smartphone you want to enroll
   • Go to the app store for your device and search for Duo Mobile (not the Google Duo app!)
   • When prompted, allow Duo Mobile to take pictures and record video
7. Click the Next button
8. Confirm that the Duo Mobile app is installed on your smartphone and click the I have Duo Mobile Installed button
9. Locate the QR code in the activation window
10. In the Duo Mobile app on your smartphone, tap the + (plus-symbol) button
11. Hold your phone to your computer screen so that your device camera can scan the QR code 
    • A check mark indicates that you successfully scanned the code
    • If you cannot scan the QR code, click the Or have an activation link emailed to you instead link and follow the instructions
12. Click the Continue button to complete the addition of your device
13. Look for your new device 

Add a mobile phone (cell phone other than a smartphone)

1. In Duo's Self Service Portal on your computer, select Phone number as the type of device you want to add
2. Enter the area code and phone number of the smartphone you want to enroll
   • Click the Continue button
3. Check the box to confirm that you have entered the correct phone number 
4. Confirm that you have ownership of the phone number by clicking the Send me a passcode button
5. Enter the passcode sent to your phone and click the Verify button
6. Click the Continue button
7. Look for your new device under My Settings and Devices

Add a YubiKey 4 or 5 Series Security Key (U2F hardware device)

1. Insert the hardware token into your computer's USB port
2. In Duo's Self Service Portal on your computer, select Security key
3. A pop-up window will appear on-screen to complete the enrollment 
   • If you don’t see a pop-up window, temporarily adjust your browser settings to allow the pop-up window to be displayed
4. The system will automatically contact your token for approval
   • If necessary, press the button on the hardware token to complete the enrollment

Notes

• If you’ve lost or misplaced your enrolled device, contact IT Help by phone at 513-529-7900 or by live chat at MiamiOH.edu/ITChat for assistance
• This Duo guide article will tell you more about adding a new device