2. A system, comprising: at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the system to: receive, by a credentialing and access control system, identity and authentication information associated with at least one internal identity from at least one electronic identity provider that is external to the credentialing and access control system, based on permission granted by at least one user; generate at least a first physical resource token for permitting physical access to a first physical resource; associate the first physical resource token with the at least one internal identity; receive, by the credentialing and access control system and from the at least one user, identity and authentication information derived from the external identity provider that is associated with the at least one internal identity; receive, by the credentialing and access control system, an indication of interaction of the first physical resource token with the first physical resource; and grant access to the first physical resource.
2. A system, comprising: at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the system to: receive, by a credentialing and access control system, identity and authentication information associated with at least one internal identity from at least one electronic identity provider that is external to the credentialing and access control system, based on permission granted by at least one user; generate at least a first physical resource token for permitting physical access to a first physical resource; associate the first physical resource token with the at least one internal identity; receive, by the credentialing and access control system and from the at least one user, identity and authentication information derived from the external identity provider that is associated with the at least one internal identity; receive, by the credentialing and access control system, an indication of interaction of the first physical resource token with the first physical resource; and grant access to the first physical resource. 6. The system of claim 2 wherein the first resource token is communicated to a mobile communications device.