Patent ID: 11880447
Assignee: CARRIER CORPORATION
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of operating a regional lock-state system comprising:
triggering a lock-state event at a plurality of lock assemblies by a control arrangement;
responsive to the control arrangement triggering the lock-state event, sending by the control arrangement a lock-state directive to a plurality of mobile devices;
wherein the lock-state directive comprises instructions to the plurality of mobile devices to interact with one or more of the plurality of lock assemblies;
wherein each of the plurality of mobile devices is configured to, responsive to the lock-state directive, determine proximity data that is used to perform proximity operations comprising:
determining distances from each of the plurality of mobile devices to each of the plurality of lock assemblies; and
determining, for each of the plurality of mobile devices, a closest one of the plurality of lock assemblies; and

using each of the plurality of mobile devices to send a status message to the control arrangement, the status message comprising the proximity data of the each of the plurality of mobile devices.