Authenticator applications can be downloaded to your mobile or desktop device to help prove your identity. If an unauthorized user attempts to log into your account, the app notifies you and denies them access.
Time-based one-time password (TOTP) is the mechanism an authenticator app uses to generate short-lived authentication codes when you access our systems. If you are unable to log in within the timeframe, you’ll receive another code to enter when prompted.
If you don’t have an authenticator app, you can download and install one on your smartphone or other device. There are many authenticator apps that use TOTP, including Google Authenticator, Authy, Duo Security, Microsoft Authenticator, Okta Verify and others. You will have to research the options to decide which one works best for you.