Since 2002, Kraftwerk's live performances have been conducted with the use of virtual technology (i.e. software replicating and replacing original analogue or digital equipment). According to Fritz Hilpert, "the mobility of music technology and the reliability of the notebooks and software have greatly simplified the realization of complex touring setups: we generate all sounds on the laptops in real time and manipulate them with controller maps. It takes almost no time to get our compact stage system set up for performance. [...] This way, we can bring our Kling-Klang Studio with us on stage. The physical light weight of our equipment also translates into an enormous ease of use when working with software synthesizers and sound processors. Every tool imaginable is within immediate reach or just a few mouse clicks away on the Internet."