In an ad hoc peer-to-peer type network during peer discovery, information relating to an identifier associated with users of various devices is broadcast to other devices in an efficient manner. The color-simulating device first analyzes a color to be simulated and then produces a light having the color according to the analysis result. Finally, the present invention is also concerned with a shower fitting having a line section which is configured in the form of a shower connection and in the line interior of which one of the above-described insertion units can be inserted. The control circuit includes a bang-bang controller for generating a first power signal being indicative of a predefined amount of power to be added to the power output of the power generation system. Additionally, one implementation uses a general purpose lookup engine that can traverse multiple tree bitmaps or other data structures simultaneously, and perform complete searches, partial searches, and resume partial searches such as after receiving additional data on which to search.