Duo Security - Passwordless Authentication Storage

Duo Security can also act as a passwordless account store. This behavior needs to be explicitly turned on in CAS settings for eligible multifactor authentication providers. Once enabled, user accounts that are found and registered with Duo Security with a valid email address and phone number will receive a push notification from Duo Security and are able to login to CAS without the need for a password. Duo Security accounts that do not qualify will continue on with the normal CAS passwordless authentication flow.