Duo two-step login protects your personal information and the university's data by ensuring you are you when you login to your OSU account. It works because it relies on something that only you know (your password) and something that you have (a mobile device, hardware token, etc). 

Authentication Methods

There are several available options for authenticating with Duo two-step login - you can use your mobile device, a hardware token or security key, or even Touch ID on compatible MacBook laptops.

Duo Mobile App

The Duo Mobile app is the fastest and easiest way to use Duo, available for iOS and Android devices. This authentication method works by sending a "push" to your device to verify your login attempt.

 Download for iOS Download for Android

Touch ID

If you have a MacBook laptop with a fingerprint reader and use Google Chrome as your web browser, you can use your laptop for Duo authentication. See if your device is compatible and add it as a Duo device.

Hardware Devices

If you prefer having a dedicated device for Duo, you can use a hardware token or purchase a security key.

Hardware Tokens
  • The hardware tokens are small (about the size of a car key fob). Press the button on the token to generate a 6-digit number that can be typed in to the Duo authentication screen to confirm your login. Sign-up with a Duo hardware token or find where to buy one, below.  Please note - hardware tokens must be purchased from OSU.  Third party hardware tokens are not supported.  If you would like to use a third party device, see Security Keys, below.
Security Keys
  • Security keys are USB devices which will perform the second-factor authentication when activated by touch or button-press. You can use a security key for Duo at OSU, as well as personal accounts, such as Google, DropBox, Facebook, and many password managers. Learn more about security keys and compatible devices.

Where to Get Hardware Tokens

  • Students: You may purchase one at the OSU Beaver Store Tech Desk.  If you are a student employee, your work department may choose to provide one for you.
  • Employees: If you are an active, paid OSU employee (faculty or staff), you may request a free Duo hardware token from your IT support team or from the IS Service desk. This does not apply to student employees, including graduate student employees.
    Note - Employees must request/pick up and register their own token.  They will not be distributed in batch form.
  • Other members of the OSU Community (including emeritus, associates, and sponsored accounts) may purchase one at the OSU Beaver Store Tech Desk.  They can be purchased in person or on the website.
  • Students: You may purchase one at the cashier's window in Obsidian Hall
  • Employees: If you are an active, paid OSU employee (faculty or staff), you may request a free Duo hardware token at the cashier's window in Obsidian Hall.  This does not apply to student employees.
  • Students: You may order one through the OSU Beaver Store Tech Desk and have it shipped to you.
  • Employees: If you are an active, paid OSU employee (faculty or staff), you may request a free Duo hardware token from your IT support team.
  • Other members of the OSU Community (including emeritus, associates, and sponsored accounts) may purchase one at the OSU Beaver Store Tech Desk.  
  • Students: You may order one through the OSU Beaver Store Tech Desk and have it shipped to you.
  • Employees: Ask your Office Manager, who may have one available for you.
  • Other members of the OSU Community (including emeritus, associates, and sponsored accounts) may purchase one at the OSU Beaver Store Tech Desk.

You may order one through the OSU Beaver Store Tech Desk and have it shipped to you.