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Password plus proof equals access

How Duo Works

With two-factor authentication, you will protect your account with something you KNOW (your password) and something you HAVE (your Duo-enrolled device).

Once you have enrolled in two-factor authentication, you will log in as usual. Your identity is verified by accepting a push notification from the mobile app, and either entering a passcode sent in a text message or answering a phone call.

No mobile phone? We strongly recommend the mobile app as the most user-friendly option. However, other options are available. Review the Guide to Two-Factor Authentication for further information.