Click the Duo icon.
If this is the device you’ll use most often with Duo, click the When I log in drop down, and choose from one of the two options.
*Please Note: With one of the automatic options enabled, Duo automatically sends an authentication request via push notification to the Duo Mobile app on your smartphone or a phone call to your device (depending on your selection).
CLICK OTHER OPTIONS
Click Manage Devices.
Authenticate your device.
Your device should now be verified.