Sit-On-App is a modular seating system born to meet the needs of the city and the tourists. Thanks to this system the tourist, while sitting down, can activate a wireless network using pizoelectric sensors situated within the seat: they convert mechanical vibrations to electric energy. Now the tourist can download an application that will give the opportunity to know everything about the city. A special platform and isctructions written also in Braille allow disabled people to access the service.