In the age of digitization, electronic devices are an integral part of our environment. From the personal sphere to public transport, a colorful range of energy machines can be found everywhere. Through their integration into our existence, their presence is already completely familiar, both at the micro and macro environmental level. The electro smog belonging to electronic devices encircles all spheres. Technology and humanity live in symbiosis, and the extent of this will only increase over time. The signal_zone project provides insight into the presence of invisible and imperceptible electro smog. Using the “sound of current”, it demonstrates the electrical network structure of our environment within the framework of a portable audiovisual installation.It reacts in an atypical way and illustrates the imperceptible signs and structures of electro smog, reflecting on the relationship between the individual and the invisible environment.