Light Walk’ is a project designed for the UNESCO 2015 International Year of Light Festival. Located in the passages leading into the Carl Zeiss eG, it is an interactive light installation which aims to encourage the use of multiple passages by displaying the data of the people’s presence from each passage around the courtyard into the main passage, containing the visualization. By placing sensors in each of the walkways, the movement of the user is tracked and then shown as a ‘data ghost’ of light through a 3D light matrix.