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Emotion Maps were created by Christian Nold, as an academic art research project. 
Emotion Maps are created by equipping a being with a GPS unit and a galvanic skin response recorder; a person's galvanic skin response changes depending on their emotional state and is used in lie detectors. Using these a map of a person's emotional response is created. Emotion maps then ascribe the mood changes to a persons surroundings, with the maps annotated, by those who used the equipment, to what triggered the emotional change and what the emotional change was. 
Since its inception in 2004, there have been over 2000 users of the bio-mapping device, with maps created for more than 25 cities including Paris, San Francisco and London.
In the least few years Christian Nold has been unhappy with uses of bio-mapping and emotion maps, and has copyrighted and trademarked the concept and machine.