“Morse Code Communication” is a light artwork by Klara Hobza presented at GLOW Eindhoven 2006 in Eindhoven, Netherlands.
On the top floor of the GGD building in the city center, Hobza has placed a large number of spotlights in front of the windows. All the lights can be switched on or off simultaneously, allowing them to function as a signaling key. Using Morse code, she sends messages to the residents of Eindhoven, awaiting a response.
Programme information from GLOW Eindhoven. Short excerpt quoted for reference; see the original page for full text, images and credits.