....A digital platform to connect celebrities and their fans during live events through the digital autograph, an innovative way to give the fans a memory of their participation in the event. The platform is composed by 3 different apps: - app for iPad for stars to sign the autograph and take/choose pictures - app for fans to receive autographs and with the calendar of Stargraph's events - web-app for administration to set the autographs'sessions, places, time etc. Through a geolocalization system and an integrated cloud servers architecture, only the fans present at the event will receive the digital autograph. And the digital autograph is not a signature on a digital device, but something more. For us, the digital autograph is a combination of the following elements: - photo: it can be chosen in the library or shot during the event - autograph of the celebrity - logos of the sponsors - date and place of the events - name of the fan who receive the autograph: so every autograph is different from the others