3. The method as claimed in claim 1 , wherein a portable controller is used for control or operation, the method further comprising picking up the spoken commands and forwarding the spoken commands to a speech recognition unit using the portable controller.
3. The method as claimed in claim 1 , wherein a portable controller is used for control or operation, the method further comprising picking up the spoken commands and forwarding the spoken commands to a speech recognition unit using the portable controller. 6. The method as claimed in claim 3 , wherein the portable controller assumes the control or operation of the first target system based on a proximity of the portable controller to the first target system to be controlled or operated.