An interactive system called Canovaccio helps people organize and participate in cultural events in public spaces in Venice. Users can demonstrate appreciation for events by using their smartphone like a hat. To join the Canovaccio club, users must throw a virtual ring into the Lagoon from San Marco Square. Members receive a personalized "Murrina" on their profile that grows more detailed based on their activities and feedback. Members can leave the club by passing their Murrina to another user via Bluetooth. New members are voted into the club as current members vote with virtual white or black balls on their smartphones.