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UL2FCTR/Duo supports multiple types of authentication methods, each with unique security features. Learn about each authentication method, from the most secure to the least secure.

Learn about UL2FCTR/Duo, UofL's two-factor authentication system. Get information on what UL2FCTR is, who needs to sign up for UL2FCTR/Duo, what university systems/applications use it, and how to sign up for it.