A thin film magnetic head which has a thin film coil for generating a magnetic flux and a magnetic pole layer for emitting the magnetic flux generated by the thin film coil toward a recording medium. One of the fields of favored application is the generation of symbologic images for the piloting of aircraft. Information relating to the energy consumption is displayed to a user on one or more devices. If the updated module is not installed, the user requests a runtime artifact from the server for the module which is then installed on the user’s system. The second handshake process is initiated prior to completion of the first handshake process.