Abstract: A computer unit (10) arranged to establish contact between itself and a centralized server (12), in where the computer unit comprises means to establish a networked connection (22) with said server (12), and wake up means in case the computer unit is in an off or sleeping state, and optionally if the computer unit is on. The computer unit (10) comprises or is connected to a mobile unit that is active whether the computer unit is in off, in hibernation or sleeping state, or on state, and in where the mobile unit is adapted to receive a unique request from the server (12), via a mobile telecommunication connection (20), and if the request is identified as genuine, the computer unit (10) is adapted to establish a new and separate networked connection (20; 22) to the server (12).

Abstract: A computer unit (10) arranged to establish contact between itself and a centralized server (12), in where the computer unit comprises means to establish a networked connection (22) with said server (12), and wake up means in case the computer unit is in an off or sleeping state, and optionally if the computer unit is on. The computer unit (10) comprises or is connected to a mobile unit that is active whether the computer unit is in off, in hibernation or sleeping state, or on state, and in where the mobile unit is adapted to receive a unique request from the server (12), via a mobile telecommunication connection (20), and if the request is identified as genuine, the computer unit (10) is adapted to establish a new and separate networked connection (20; 22) to the server (12).

Abstract: The method according to the present invention relates to supply of heat energy to a metal melt or a similar electroconductive fluid (1,11). According to said method rod-like elements are partly immersed in the metal melt or a similar electroconductive fluid, the end portions (6,15) of said elements projecting from the melt are connected to electric power, and said end portions (6,15) and the other end portions (5,16) of said element consist of an electroconductive material, whereas the relatively long center portion (3, 13) of said element being immersed in the melt consists of electric resistance material, and at least said resistance material is coated with an electric insulating heat conductive and melt bath resistant coat (4, 14) which, thus, transfers the heat energy created in the resistance material of the elements to the melt.The invention, furthermore, relates to a heating element for use with said method.