Using Multi-factor authentication with a passcode

There are two methods available for Multi-factor authentication with Duo. In either case, you begin your login by entering your username and password as usual. After successfully entering your login and password, you can choose one of the two MFA methods. The first method - "Push" - sends a notification to your smartphone and waits for you to approve the login using your smartphone. The second method - "Passcode" - requires you to enter a password that is generated either by a smartphone app or a hardware token. The "Push" method is more convenient, but the "Passcode" method will work even when you don't have internet access on your smartphone. The steps below cover using multi-factor authentication with the "Passcode" method.

Prepare the device that will generate the passcode. If it is a hardware token, connect it to a USB port on your computer. If it is a smartphone app such as the "Duo Mobile" app, open that app on your phone (note that you can use a passcode generated by a smartphone app even while the smartphone does not have an internet connection).
Login using your username and password as usual
When prompted for Multi-factor Authentication, click "Enter a passcode"
If you are using a hardware token, press the button on the token to trigger to code. If you are using a smartphone app, type in the code that is displayed by the app.