This article describes all methods available for Brown's two-step. For your convenience, you can use as many of these methods as you'd like. To enroll devices, please review this article.

Smartphone

We recommend adding a smartphone if you have one simply because it is the most convenient and flexible method. However, it is not required. The Duo Mobile app is available for iPhone, Android, and Windows phone. Here's what a smartphone will allow you to do:

• Duo push: Receive a push notification to the Duo app. This requires either a cell signal or wifi.
• Phone call: Answer the automated call and press any digit.
• Text message: Request a passcode be sent to your phone by text message.
• Generate a passcode: No signal? Pressing the key icon next to your account in the Duo app will generate a bypass code that works even if you do not have a signal.

Tablet

Similar to a smartphone, an iPad or Android Tablet with the Duo Mobile installed will allow you to verify. However, the Smartphone capabilities specific to phones (phone call and SMS passcode) are not available on a tablet.

• Duo push: Receive a push notification to the Duo app. This requires either a cell signal or wifi.
• Generate a passcode: No signal? Pressing the key icon next to your account in the Duo app will generate a bypass code that works even if you do not have a signal.

Non-Smart Phone

Have a flip phone that can't install apps? No problem. You can still use these methods:

• Phone call: Answer the automated call and press any digit.
• Text message: Request a passcode be sent to your phone by text message.

Landline

If you have a landline (like a phone in your Brown office), we recommend adding it as a backup method.  You can also add your home number. On a landline, you can receive a:

• Phone call: Answer the automated call and press any digit.

Passcodes

If you have a smartphone or tablet with the Duo Mobile app, you can view a 6-digit passcode in the app that works to access your account. This passcode also works when your phone is offline if you do not have a signal or wifi connection.

Physical Security Keys

Physical keys can be connected to your Brown Duo account to provide a more tangible layer of security. These USB sticks act in lieu of a Duo notification to your phone or tablet. If you are interested, we recommend YubiKeys, which are available in different sizes and price points. If you are an employee of Brown, you can talk to your department IT professional to discuss purchasing one.