The Duo Mobile app, which assists you in the Two-Step Verification process, works best when you use its Push feature for one-touch functionality. However, there might be times when you lack reliable network access, yet still need to use Duo Mobile. For example, you may be traveling and not want to use an expensive cellular roaming plan or an unfamiliar WiFi network, or you may find yourself in a location with a weak or nonexistent data signal. 

Fortunately, you can still use Duo Mobile without relying on data access. After you have configured the Duo Mobile app to connect with your Two-Step Verification account, it can generate passcodes to access PennKey-protected websites—even when your mobile device is not connected to any WiFi or cellular network. 

To generate a passcode when you are trying to log in to a PennKey-protected site, open the Duo Mobile app on your mobile device, and then:

1. Click “Show” in the lower right corner of the “University of Pennsylvania” profile panel. A passcode will appear.
2. Enter the generated passcode in the Two-Step verification code box on the site you want to access. (Be sure to omit any spaces shown in the passcode display on the Duo Mobile app.)

Stay safe: University technical support will never ask you for your Duo passcode or your PennKey password. Never give anyone your passcode, and only use it when you’ve accessed a website that requires it.

For information on using the Duo Mobile app for Two-Step Verification: https://www.isc.upenn.edu/two-step-quick-start.

For additional tips, see the One Step Ahead link on the Information Security website: https://www.isc.upenn.edu/security/news-alerts#One-Step-Ahead.