LASACT is a temporary, interactive light and sound installation. Visitors are able to modify the visual appearance and sound patterns by using a web application for mobile devices. Chaotic and harmonious lines alternate while visitors are taking control of the installation – since everybody is able to take influence, chaos may erupt till people start to coordinate their interactions. Inside this enclosed system, self-perpetuating ideas will be established: Questions arise regarding the visitor’s own influence and significance leading to a situation where concepts and ideas are amplified reciprocative. The installation conveys a lot of today’s social aspects in communication, social relation and group dynamics; despite being connected globally, every member of today’s society stays inside his own world. The virtualization of these aspects leads to one’s own isoloation without the feeling of being alone. Nowadays brief moments of absence – induced and facilitated by the smart phone technology – are accepted, even during face to face meetups. Despite being connected globally, members of today’s society escape into their own world. The LASACT installation conveys a lot these aspects in communication, social relation and group dynamics. The visitor can interact in his own scope but is presented with the result of a collaboration. The virtualization of all these aspects leads to one’s own isoloation without the feeling of being alone.