TRACKER is an interactive artwork exploring surveillance in contemporary society. It previewed at Articulate Project Space in Sydney over two weekends in June 2013. The video documentation above shows people interacting with the robots which were programmed to follow viewers around the gallery. Each robot was also linked to the stock price of one of three big weapons manufacturers in the US - Lockheed Martin, Boeing and Northrop Grumman. These companies make robot spy planes or drones. As the share price of a company goes up, the TRACKER robot assigned to that company moves more quickly and gets closer to its target person.