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Indoor navigation for a library

To find the optimal way to a destination without the help of appropriate tools is sometimes not particularly easy or even impossible. This is also the case in the HafenCity University Hamburg (HCU) library in Hamburg. Due to the inhomogeneous signatures of the books, it is not possible to make clear assignments to specific subject areas here. This is due to the fact that the current collection has been brought together from several old collections. To simplify this situation, an indoor navigation system based on smartphone sensors is currently being developed. Acceleration sensors are used to realize a step counter. In combination with gyroscope data a dead reckoning can be carried out. The height information is derived of barometric measurements. For additional support, routing graphs are used to constrain the walking direction.