Indoor navigation provides location services and navigation for indoor environments like airports, hospitals, warehouses, and offices. It uses mapping technologies to convert floor plans into digital maps, navigation technologies to calculate shortest paths between locations, and positioning technologies like WiFi, Bluetooth, and QR codes to determine a user's indoor position. The technology stack includes layers for mapping, navigation, positioning, applications, and an interactive user interface. Indoor navigation helps users and staff navigate large indoor spaces and find amenities and points of interest.