Duo: Two Factor Authentication
What is it and why use it?
Duo is a tool that provides two-factor authentication to better protect your account by requiring an additional piece of information beyond your username and password. When you log into a protected service using your Colorado State University’s single sign-on, you will be required to use a device that you have (your mobile phone, desk phone, a hardware token, or other device) to provide an additional layer of security to your account. This is done by using the Duo Security app (on your smartphone) and receiving a push authentication request, or through a phone call or entering a generated code.