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Duo Questions & Answers

General Questions

What is two-factor authentication?
Why do I need two-factor authentication?
Is Duo required?
Who will use the service?
I already use Duo for TAMUS SSO. Do I need to enroll again?
What data is stored by Duo?

Using Duo With Your Phone

Do I need a smartphone to use Duo two-factor authentication?
I don't have a smartphone. Will I be able to use Duo two-factor authentication on my regular cell phone?
What if I wanted to use a landline at my office instead of my personal phone?
Can I use multiple phones, or am I restricted to one phone?
Does it cost me anything to use the service via my phone? If so, will I be reimbursed?
What if I prefer not to use my phone at all?
Can I change to a different phone with a different number after I have the service?
What does the Duo app access on my phone?
What should I do if I lose my phone?


How do I enroll a mobile phone that is not a smartphone?
I am trying to log into my two-factor authentication service on my phone, but I am unable to do so. What should I do?
I'm using a hardware token, and it's not working. What should I do?
Why have I stopped receiving push notifications on Duo mobile?
How frequently will DUO prompt when I access Tarleton email on my phone?