Abstract: The inventive remote control method includes opening a first communication session between a calling terminal and a centralized information system by a telecommunication network, transmitting the identifier of the calling terminal user to the centralized information system, the identifier of the information system being transmitted to a remote control by the telecommunication network, and verifying the identifier with the aid of the centralized information system. In the case of the positive verification result, the method includes transmitting an authorization from the centralized information system to a remote control information system and performing the authorized command thereby.

Abstract: A lifting device for raising a platform out of a liquid medium and lowering it back into the liquid medium comprises a tank supporting the platform and connected to a side wall of the space containing the liquid medium through a linkage pivoted to the side wall and to the tank. To raise the platform air is pumped into the tank and to lower it the air is displaced by the liquid medium.