Surveillance cameras are technologies with fast, growing use in today's society. Their use is usually for security reasons. In poorer countries, the emphasis is on curbing urban crime; in richer nations, it is the threat posed by terrorism. DIO is a game for mobile phones, still in development, which thematizes the rampant proliferation of cameras in urban areas, promoting a collaborative mapping of their geographic location. Players choose which group they will join and have the following tasks: 1) geolocate and photograph surveillance cameras scattered around the city; 2) compete with the other team for control of the cameras. Registered cameras will then be transformed into geolocated points with which the player interacts, with cameras being “taken” when the player is physically close to them. This article presents the basic plot of the game, its rules and dynamics. It also discusses the economic uses of personal data, its growing role in the market in the near future and how to thematize this issue through gamification.