New digital devices, mainly mobile ones, raise new questions on architectural and urban design practices. People became ''sensors", being at the same time able to move into the city and to move into the information space. Mobiance, a mix between Mobile and Ambiance, is a research and creation process focused on the impacts of innovative ICT technologies, especially mobile, on urban design. This paper first presents the context of the third workshop based on the topic, then it introduces the proposals produced by participants; to conclude the contribution develops an analysis of these proposals based on the sharing society paradigm.