Dual or Two-Factor Authentication is where users must authenticate twice to access a system or application. Once the opt-in process is completed, users can enable the 'Global NetID+' setting, which will enforce second-factor authentication for all sites utilizing UA WebAuth or Shibboleth authentication services for login – such as CatMail, D2L, and UAccess. In addition, two-step authentication can help protect your UA account should someone else learn your password.
The Duo Mobile Authenticator app is one method users can employ to complete their two-factor authentication. Duo does not use an authentication code, instead it uses push notifications on the Duo-enabled device to request that the user verifies and confirms an authentication attempt in real-time. Duo Mobile and NetID+ are connected via Internet and periodically require a WiFi or Data connection. Duo is available on the app stores of iOS, Android, BlackBerry and Windows Phone devices.