Changes in the demographic and socioeconomic structure of the population, such as the decreasing number of school students and the increasing elderly population influence the mobility needs of the society. These mobility needs have in turn, an effect on public transport: e.g. barrier-free access to public transport, simplifying ticketing and funding problems. At the same time, technology boosts all types of industries including services of general interest (SGI) like public transport. Internet, RFID (radio-frequency identification) and NFC (near field communication) are just a few examples...