Multi-factor authentication (MFA) is a method of confirming a user's claimed identity in which a user is granted access only after successfully presenting 2 or more pieces of evidence (or factors) to an authentication mechanism. Valid factors include:
- knowledge (something they and only they know)
- possession (something they and only they have)
- inherence (something they and only they are)
UMIACS utilizes the Duo security platform to allow mobile devices to serve as a second factor.