The concept of mobility is changing. Nowadays there are different systems to help people move in a sustainable way. The concept of sharing vehicles like cars or bicycles is more and more spreading. The bike sharing is growing up in the last years in many cities in different parts of the world. People prefer bikes because they are a healthy and a fast way to move especially across small distances. Moreover, people enjoy riding a bike. There are two types of bike sharing: the station-based bike sharing and the free-floating bike sharing. The first one is usually public, the user has to do the registration on the web site and then the service can be used.