Established in 1993, the SAMU Social's mission is to reach out to people on the street that seem physically or socially distressed. The mobile teams of the SAMU Social of Paris manage as best as possible all the emergency calls in response to social and health reports via a dedicated emergency phone number (115) or on rounds called "maraudes." Since 2003, a 4D-based application has been effectively dealing with 1500 calls a day.