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"\"For Those Who Can See\" is an art project by Daniel Schulze. Using smoke machines, speakers, and a 7 by 7 grid of concrete slabs, the speakers are programmed to pulse at specific intervals, triggering the smoke when they do. The slabs of concrete have been drilled with holes, resulting in 'modern smoke signals.' Schulze's project is not yet fully realized, and a complete installation is set to debut at DMY Berlin. Below is a video mockup of the project."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2010/06/10/high-tech-smoke-signals-a-luddites-dream-or-nightmare/>