What second factors are available and is there a method that you recommend?

You can select between various variants when you log in using the two-factor authentication:

• You request that the code is sent to you by e-mail
• The desktop app on your PC generates a token which checks the login page automatically.
• You generate the code by using an app on your smartphone
• You receive a push notification on your mobile
   

All selected methods for the two-factor authentication are absolutely safe. The most comfortable solution is to use the Okta Verify App on your mobile device or on your desktop.

Furthermore, your details are safe at any point in time. The second factor provides additional security which has been standard practice in the online world for a while.