ORCID allows users to enable Two-factor authentication (2FA) on their ORCID account. 2FA is a secondary security check made during the sign-in process. It provides additional confirmation that the user is indeed the person signing into an ORCID account. For more information relating to how this can be configured for users please see our KB article.
OpenID connect integrators using the member API can check to see if the user had signed into their ORCID account with 2FA enabled as part of the OAuth process. This can allow member integrators to grant access to their researchers to higher security systems.