Applications and devices that don't support an inline authentication prompt or a secondary passcode field use append mode. You'll enter both your password and an authentication method into the password field.
How to Use Append Mode
Enter your password and the authentication method you want to use, separated with a comma. It will look something like this:
In place of authentication_method:
|password,passcode||Log in using a passcode, either generated with Duo Mobile, sent via SMS, generated by your hardware token, or provided by an administrator.
Examples: "mypass123,123456" or "mypass123,1456789"
|password,push||Push a login request to your phone (if you have Duo Mobile installed and activated on your iPhone, Android, Windows Phone, or BlackBerry device). Just review the request and tap "Approve" to log in.|
|password,phone||Authenticate via phone callback.|
|password,sms||Get a new batch of SMS passcodes.
Your login attempt will fail — log in again with one of your new passcodes.
You can also add a number to the end of these factor names if you have more than one device registered. For example, push2 will send a login request to your second phone, phone3 will call your third phone, etc.
To use Duo Push if your password is "hunter2", type:
To use the passcode "123456" if your password is "hunter2", type:
To send new SMS passcodes to your second phone if your password is "hunter2", type: