US Patent 11594088 Access control for emergency responders

A method of access control for emergency responders according to one embodiment includes transmitting, by an access control server, an access credential to an emergency responder server over a first network, transmitting, by the emergency responder server, the access credential to an emergency responder mobile device over a second network different from the first network, wherein the second network includes a dedicated emergency responder network, and transmitting the access credential by the emergency responder mobile device to an access control device.