Hello, world!” is a real installation for the virtual globe of the software Google Earth. A Semacode measuring 160 x 160 me- ters was mown into a wheat field near the town of Ilmenau in the Land Thuringia. The code consists of 18 x 18 bright and dark squares producing decoded the phrase “Hello, world!”. The project was realized in May 2006 and photographs were taken of it during a picture flight in the following month.
Have a look at the project website
2011 Talk To Me, MoMA, New York, USA
2006 Hello World!, Stadtwerke Erfurt, Erfurt, Germany