US Patent 9984524 Systems and methods for remote access rights and verification

An access control system is provided that enables a network operations center to manage and control access to a plurality of remote sites and to verify servicing of the remote sites. Individuals in possession of electronic programmable keys can be provided opening codes to activate their keys while in the field, and to enable the keys to access one or more electronic locks located at the remote sites. Usage information associated with the utilization of the electronic programmable keys at the remote sites is stored on the electronic programmable keys. A lock attendance code is generated by the keys to verify attendance at the remote locations. The lock attendance codes are then transmitted to the network operations center where they are decoded to verify servicing of the remote sites.