If you did not install and activate the Duo Mobile app when you set up your smartphone you can do it later.
- Open a browser and visit the Stanford Accounts Application.
- Click Manage.
- Click the Two-Step Auth tab.
- The devices that you have set up for two-step authentication display. Locate your smartphone and click Edit.
- On the smartphone edit screen, click Set up Duo Mobile.
- Follow the instructions for installing and activating Duo Mobile on your smartphone.