Use Two-Step Login (Duo) while traveling, or in areas with poor cellular/wireless reception or in airplane mode


Before your trip, enroll your mobile device with Duo and install the Duo Mobile app. UITS also recommends that before traveling, you decide which Two-Step Login (Duo) device options you will use and, if possible, enroll two devices, in case your primary device is unavailable (for example, is in another bag, or at your hotel).

For more about managing your devices, see Manage your Two-Step Login (Duo) devices and settings. Also, refer to Two-Step Login (Duo) device recommendations.

  • If you plan to Two-Step by receiving phone calls or text messages, you can use multiple SIM cards with Two-Step by enrolling the phone number associated with each SIM card.
  • If you plan to travel outside the US, check with your carrier to determine any fees you may incur for phone calls or texts received while abroad. If necessary, you can Two-Step using another method (for example, push or passcode) while you're away.

Poor connection or in airplane mode

With the Duo Mobile app, you can generate passcodes for Two-Step Login (Duo) without needing a network connection. The app will work in airplane mode, in an area without a cellular signal, or even in a location with no Wi-Fi signal. This solution is especially helpful for those with data-plan usage concerns.

Before proceeding, be sure you've enrolled your mobile device with Duo and installed the Duo Mobile app. Then:

  1. Go to Two-Step-Login (Duo). If prompted, log in with your IU username and passphrase. Click Login. (If you have automatic push notifications enabled, see the following warning before proceeding.)
    If you have Two-Step Login (Duo) configured to automatically send Push/Call notifications upon login, each time you access Two-Step-Login (Duo) (to change settings or manage your devices) you will receive an initial automated push notification that you should not authenticate (if you authenticate this initial automated push notification, you will be redirected to a confirmation page). To proceed directly to the Duo Authentication settings and device management options, either ignore this initial automated notification, cancel it (in Two-Step-Login (Duo)), or dismiss/deny it (on your device/phone).
  2. Click Click here to test or manage your Duo settings, and then select Enter a Passcode.
  3. Open the Duo Mobile app on your mobile device.
    Duo Edit screen
  4. To generate a Duo Mobile passcode, tap the key icon next to "Indiana University". Note that the below is only an example passcode.
    Duo key icon
  5. On the Duo authentication screen, type the generated passcode into the text box field.
  6. Click Log in.

You can now successfully authenticate to Duo.

To see how this works, view a video about using the Duo Mobile app in airplane mode.

This is document bfis in the Knowledge Base.
Last modified on 2020-11-17 11:45:03.