This guide will walk you through registering and activating the Duo Mobile app on your smartphone or tablet for multi-factor authentication (MFA) at Colorado State University.

Prerequisites

You will need two devices: the smartphone or tablet you wish to attach to your account, and a second device (i.e. a laptop or computer) used to attach it. Please make sure Duo Mobile supports your device before installing the app:

• Which versions of iOS does Duo Mobile support?
• Which versions of Android does Duo Mobile support?

Instructions

1. Install Duo Mobile on your smartphone or tablet:

• Duo Mobile for iPhone
• Duo Mobile for Android

2. Register your smartphone or tablet:

1. Log in to the NetID Two-Factor Authentication (Duo) page with your NetID and password.
2. Click on the Register Device link on the right side of the Two-Factor Authentication page.
3. Provide a unique Device Name (e.g., Cam's iPhone14).
4. Click on the Type dropdown and select Duo Mobile App.
5. Click on the Platform dropdown to select the device platform (e.g., Apple iOS, Google Android, etc.).
6. Click the Save button to save the device information.
7. After saving, the page will refresh to the Two-Factor Device Activation page with a barcode displayed. Leave this page open and move to the next step.

3. Activate Duo Mobile:

1. Open the Duo Mobile app on your device.
2. Tap + Add next to the Accounts section.
3. Use the Duo Mobile app’s barcode scanner to scan the barcode displayed on the Two-Factor Device Activation page.
4. Once the device activates, the Duo Mobile app will display Colorado State University as an account.
5. Click on Return to display your registered devices.

Related Articles

• For instructions on how to use the Duo Mobile app, see: How do I authenticate with Duo?

Support

If you require assistance with Duo, please submit a help request.