In modern airport terminals, hospital complexes, office buildings, sports arenas, university campuses, and retail outlets, there is a growing market for convenient and easy-to-use applications for navigating indoors. With an expected growth rate of 30% by 2022, according to a MarketWatch Report, this demand is accelerated by the presence of advanced sensors in modern smartphones like magnetometers, accelerometers, and gyroscopes. To meet the demand, our team at IBM Research-Ireland built a production-ready indoor positioning system that is more accurate than an existing commercial solution across different smartphone models.