Passcodes with the Duo Mobile app

Overview

This article explains how to generate two-step login passcodes using the Duo Mobile app by Duo Security, how to use them, and store them for future use.

Passcodes can provide a backup in case your other registered device(s) are unavailable.

Information

Prerequisite

Install the Duo Mobile app on your smartphone.

• iOS devices: Duo Security in the Apple App Store
• Android devices: Duo Security in the Google Play store

How to Generate Passcodes

Follow these instructions to generate passcodes:

1. Open the Duo Mobile app on your cell phone.
2. Tap on the University of Oregon entry.
3. Use the passcode during login, or if you'd like to save it for later use, write it down instead.
4. To generate multiple passcodes, click on the Refresh Passcode button below the displayed passcode, and a new six-digit passcode will appear each time; repeat to generate as many additional passcodes as required.

How to Use Duo Mobile passcodes for Two-Step Login

1. Click the appropriate passcode option button on the two-step login prompt depending on your device
   1. For the Duo Mobile app, select the Duo Mobile passcode option
2. Type in the passcode digits
3. Click Log In

How to securely store passcodes

• Keep passcodes somewhere safe from prying eyes, like in your wallet, or in an encrypted password safe application.
• Avoid storing your Duck ID password or details about how to use these passcodes near where you keep the passcodes themselves.

Passcode tips

• Passcodes can serve as a backup in case your other registered devices become unavailable.
• Each passcode can only be used one time.
• Use your passcodes in the order they were generated.
  • If you use a passcode out of order, any preceding ones will be invalidated.
• Passcodes can be generated without cellular data or Wi-Fi connection. 
• The passcodes do not have an expiration date. However, when you use a passcode, all passcodes you generated before that one become invalid for future use.