The Duo smartphone app provides options that work without a data plan, a texting plan or even a connection, if necessary. The app can generate the required code without need of either a telephone signal or data plan, and it can do so anywhere in the world. If you have a signal and data plan, the app makes two-factor authentication as easy as a pushing a single button, but if you don’t, you can use the app to generate a six-digit code and enter that instead.
More information about Duo data usage can be found here.
Short URL to this page: https://answers.fredonia.edu/x/rAEjAg