Duo | Using Duo without Cellular Service or While Traveling

Using Duo without Cellular Service or While Traveling

Duo provides offline authentication options for times when you lack cell service or when using 2FA could cause you to incur extra cellphone charges, such as when you are traveling internationally.

NOTE: In order to take advantage of the options below, be sure to register your device(s) for use with your 2FA account (including, if applicable, downloading and installing the Duo Mobile App on your smartphone) before you begin your travel.

Duo Mobile App (Smartphones and Tablets)

You can request single-use passcodes directly from the Duo Mobile app, even when your mobile device is in airplane mode or lacks cell service.

Simply open the app and tap the Passcode button. Depending on your device, this button may say Generate Passcode or Generate Token Code. It may also simply contain an image of a key.

Enter the code provided in the Passcode field of the Duo verification screen.


If you do not have access to a smartphone or tablet that you can use for 2FA while traveling, please contact the Technology Support Center for assistance.