US Patent 10062226 Access control system with automatic mobile credentialing service hand-off

A method of initializing a mobile device to operate in a mobile credentialing system, the method including sending an authorization code and host URL from a hotel loyalty application to a mobile credential library of a mobile application on a mobile device, the mobile device operable to perform a first sync with a credential service to establish an ongoing trust relationship between the mobile credential library and the credential service such that the mobile application is operable to interact with an access control without the user of the mobile device knowing either an authorization code or a host location of the credential service.