Savino, Gian-LucaGian-LucaSavino2023-04-132023-04-132023-02-20https://www.alexandria.unisg.ch/handle/20.500.14171/107740In the last two decades, digital mobile navigation technologies have been replacing physical tools (i.e. physical maps), revolutionizing how people navigate familiar and unfamiliar spaces. Initially designed for in-car use, mobile navigation systems are being continuously adapted for other modes of transportation and novel user groups. However, the underlying system architecture is not being adapted to its new users. We have seen rapid technological evolution in each of the individual modules of the system architecture of turn-by-turn (TBT) based mobile navigation systems. Still, the overall architecture has remained the same. From a Human-Computer Interaction (HCI) perspective, this rigidity is rather unusual. However, in recent years we have seen the design space for mobile navigation technologies decouple from the prototypical architecture of TBT-based mobile navigation systems. People are combining existing and new modules to design and develop completely different and novel mobile navigation systems. This thesis systematically explores this decoupling. To assess the mobile navigation systems that result from this decoupling, Chapter 2 of this thesis presents a novel method which gives us a better understanding of usage patterns and peoples intentions when they are using mobile navigation applications. Chapter 3 shows that cyclists benefit from orientation-based navigation systems. In Chapter 4 we show that the environment (i.e. the street network) influences how successfully certain mobile navigation systems can be used. Chapter 5 explores how we can improve the user experience of orientation-based navigation methods by simulating human navigation behavior. Finally, Chapter 6 presents a study on avoiding the risks of decoupling the design space for mobile navigation technologies by the designing and introduction voice assistant-based input modalities for cyclists. In summary, mobile navigation technologies are undergoing a transformation. Decoupling the design space from its former system architecture results in novel mobile navigation systems and use-cases. Presenting a systematic approach for assessing these novel mobile navigation systems and still ensuring that interactions are safely designed, this thesis, based on an HCI perspective, contributes to the understanding, evaluation, and improvement of mobile navigation systems for specific user groups.enNavigationBenutzeroberflächeNavigationssystemNavigationsmethodenNavigationsverhaltenMensch-Computer-InteraktionEDIS-5264navigational user interfacenovel navigation systemsas-the-crow-flies navigationMobile navigationdoctoral thesis