Deciding which devices to register with Duo

Introduction

We strongly recommend registering at least two devices.

  • If you have at least two available, you'll always be able to use Duo, even if your default device is unavailable — for example, if you forget your smartphone at home, or lose it.
  • Don't have a second device? We recommend using the Duo Mobile app to pre-generate mobile passcodes you could use later to login in a pinch.

The following device types work with Duo:

  • Smartphones
  • Tablets
  • Non-smart cell phones (like flip phones)
  • Landline phones (like UO desk or home phones)
  • Specific types of hardware tokens

Keep reading to learn more about these options.

Which devices should I register?

Smartphones and tablets

Smartphones are by far the most popular type of device to register with Duo because they're the easiest to use during login, and most people already carry a smartphone.

At the University of Oregon, more than 90% of Duo users have registered a mobile device.

Many login methods are possible with a smartphone or tablet after you install the free Duo Mobile app from Duo security:

  • Duo Mobile's Push feature: Receive a notification on your device and tap Approve
  • Generate a passcode: Enter digits into the Duo passcode field and click Login (these are great because they work even if your phone doesn't have an Internet connection!)
  • Pre-generate passcodes for emergencies: You can use the app to pre-generate passcodes you can use later as a backup way to login if your device is unavailable
  • Receive a phone call from Duo: Answer and press 1 to login
  • Receive passcodes via SMS (text message): Enter digits into the Duo passcode field and click Login

Non-smart cell phones

Your mobile doesn't have to be smart to help you stay secure with Duo!

You can also register non-smart cell phones and use these login methods:

  • Receive passcodes via SMS (text message): Enter digits into the Duo passcode field and click Login
  • Receive a phone call from Duo: Answer and press 1 to login

Landline phones

Register your desk phone as a backup device in case you forget your mobile at home, or register it as your default device if you don't have a mobile.

You can also register your home landline, if you ever work from home.

To use a landline phone, you'll just answer a phone call from Duo and press 1 to login.

Hardware tokens

Hardware tokens are recommended for users who have no other devices to register with Duo.

These tokens are small fobs about the size of a keychain. They generate passcodes the same way the Duo Mobile app does.

To use a token, you'll press a small button on the token and wait for the passcode to appear. This can sometimes take a few moments. When your passcode is ready, enter the digits into Duo's passcode field and click Login.

Please note that while UO operations are modified due to COVID-19, our ability to distribute new tokens is limited. Employees are encouraged to register a mobile or home landline phone until campus operations return to normal.

For more information about token distribution, please see this related article.

Can I or do I have to register a computer?

No, computers like laptops and PCs can't be registered with Duo.

How do I register?

See the related article Getting Started with Two-Step Login (Duo) for instructions.