A selection of high quality works presented in the fifth international UPINLBS (Ubiquitous positioning, Indoor Navigation and Location-Based Services) conference will be recommended to the Special Issue of the Journal MDPI Sensors: ‘Selected Papers from UPINLBS 2018 Conference’. The UPINLBS is a unique forum for scientific and technological exchange among global researchers in the field of sensors for indoor/outdoor navigation and positioning. This Conference has a long tradition starting from the year 2010 in Finland and has been held every two years in different cities in the world: Masala, Finland (2010), Helsinki, Finland (2012), Texas, USA (2014), and Shanghai, China (2016). In 2018, the fifth UPINLBS will be held in Wuhan, China (http://unsc.whu.edu.cn/upinlbs/).
This conference concentrate on innovative, state-of-the-art solutions and techniques dealing with ubiquitous positioning, indoor navigation and location-based technologies. In addition, it covers sessions on GNSS based positioning indoors/outdoors, Positioning based on wireless sensor networks, Positioning based on signals of opportunity, Indoor navigation and so much more. Steady progress and the increasing interest in the localization-based services and indoor navigation has contributed to promote the potential of our community in this field, which constitutes one of the most significant and fast developing scientific activities on a worldwide scale.