Duo Logo

Two-step login to protect your OSU account.

Sign up for Duo

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Manage Duo Devices

Login to manage your Duo-enabled device or hardware token.

Manage your Duo devices

Device Reactivation

Get a new phone? Use this service to reactivate Duo.

Reactivate your phone

Temporary Duo Code

Generate a temporary Duo code in advance for use in situations where you may not have access to your Duo device or token, such as a proctored exam, or before you run out of phone battery.

Generate a temporary code


Duo Mobile for iOS devices

Download from the App Store  


Duo Mobile for Android devices

Download from the Google Play Store  


Duo Hardware Tokens

Purchase from the OSU Beaver Store  


Increase in OSU accounts compromised compared to previous three years.

Protect your account by using Duo.

Sign up for Duo

Who is it for?

Duo is now available to anyone with an OSU Login.

Why should I use it?

Strong passwords are essential, but they aren't enough. Phishing attacks and data breaches put your account at risk. Duo provides extra security for your OSU Account with two-step login.

Two-step Login

With two-step login, anyone trying to access your account must provide two forms of ID:

  • Something you know, such as your password.
  • Something you have, such as a passcode, a phone, or even a mobile app.

Some services and websites refer to this as two-step authentication, two-step verification, multifactor authentication, or login verification.

The difference between the "normal" OSU login screen and the two-step login screen is shown here.