If you do not have your usual Duo device, use your backup device or your pre-generated bypass codes to verify your identity.
Don't have a backup device or bypass codes? Visit a walk-in location with a photo ID.
To use a backup device, you must first have more than one device enrolled in Duo. See Decide What Devices to Enroll in Duo to find out ways to enroll multiple devices.
Use the Duo Mobile App
Use a Landline to Authenticate