MOSCOW--(BUSINESS WIRE)--Microsoft Indoor Localization Competition 2015 was held April 13-15 in Seattle, WA, among 30+ organizations, including both universities and commercial companies from all over the world developing indoor positioning means for consumer, professional and industrial use. All participates were split in 2 categories: “Infrastructure-free” and “Infrastructure based” (like iBeacons). SPIRIT Navigation infrastructure-free mobile indoor navigation software for standard smartphon