Abstract: A user may be authenticated by an identity provider (IdP) and an authentication agent (AA), producing a result. Proof of the authentication, such as a ticket for example, may be provided to the SP. The UE may be authenticated with another IdP and another authentication agent, producing an associated result. Proof of the authentication, such as another ticket for example, may be provided to the SP. One or more of the authentication agents may reside on an authentication entity besides the UE. A multi-factor authentication proxy (MFAP) may trigger the authentication agents to nm authentication protocols and the MFAP may provide tickets to a client agent of the UE. A user may seamlessly transition between client agents on the same UE or between client agents on different UEs by leveraging authentications.