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

Important:
As of November 2, 2017, CAS logins for all IU faculty, staff, students, retirees, and affiliates will require Two-Step Login (Duo). This includes both personal and group or departmental accounts. For more, see About using Two-Step Login (Duo) every time I log into CAS.

On this page:


Traveling

If possible, 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 (e.g., is in another bag, or at your hotel).

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

Note:
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.

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). Enter your IU username and passphrase if prompted, and click Login. (If you have automatic push notifications enabled, see the following warning before proceeding.)
  2. Important:
    If you have Two-Step Login (Duo) configured to automatically send Push/Call notifications upon login, each time you access the Duo tool (e.g., 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 the Duo tool), or dismiss/deny it (on your device/phone).
  3. Click Click here to test or manage your Duo settings, and then select Enter a Passcode.
  4. Open the Duo Mobile app on your mobile device.
    Duo Edit screen
  5. 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
  6. On the Duo authentication screen, type the generated passcode into the text box field.
  7. 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 2017-04-21 09:26:47.

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