Many popular services and websites offer two-factor authentication. Information Assurance (IA) encourages you to turn it on whenever it’s available to protect your personal accounts.
Duo may be an option
If you already use the Duo Mobile app for two-factor at U-M, you might be able to use it with your personal, non-university accounts. If a service’s instructions for setting up two-factor mention Google Authenticator, the Duo Mobile app can be used in its place.
Instructions vary by service
Two-factor goes by many different names—two-step verification, login approval, login verification, and so on—but they all protect your information and accounts. Refer to the following sites for lists of popular websites and services and links to instructions for turning on two-factor when it is an option: