The monbillet.ch app is used to check tickets issued by monbillet.ch. It uses the device's camera to scan the QR codes printed on those tickets.The app is meant to be used by monbillet.ch customers only (i.e. event organizers and their audience). It consists of an online mode, available to organizers and ticket verifiers, as well as of an offline mode which gives access to the contents of the ticket (event name, location, date, ). The offline mode is available to both organizers and spectators.