A Vienna-based design studio Breaded Escalope launched a prototype of a wall clock that uses shadows to display the time. The clock works as an ambient light and does not show numbers or hands on its face until someone touches it, at which point two shadows that are forming clock’s hands show up. The clock is made of raised plywood ring with LED’s underneath that light up its centre. When the face of the clock is pressed all LED’s turns off except three lights around the edge that produce the shadows of that time. The time and lights are run and coordinated by an Arduino microcomputer. The clock was presented during the city's design week from 25 September to 4 October 2015 in Vienna at the Ganz Neue Gallerie.