Abstract: A method of controlling a reservation at a charging station for a vehicle includes a controller in communication with a remote advisory unit. The method includes positioning a ground lock at the charging slot, the ground lock being controllable through a station command unit. The method includes generating an identification number through the remote advisory unit and transmitting the identification number to the controller and the station command unit. The identification number is randomly generated. The ground lock is moved to a blocking position when an estimated time of arrival of the vehicle is less than a first threshold. The method includes broadcasting a message to the station command unit with the identification number, via the controller, when the estimated time of arrival is less than a second threshold. The ground lock is moved to a non-blocking position when an authentication process is completed.