Dring 93 is a project backed by Paris Métropole, coordinated by the association Concert Urbain with Iri and the firm Orbe (Xavier Boissarie) and which mixes participatory drama and mobile phone as a tool for reports from the beltway to Saint-Denis, in the district of Porte de Paris. The project has an innovative approach of public urban space, based on crossing, course and the restitution of users’ perceptions.