Apple allows users to design detailed maps of their indoor spaces and also enables visitors to view their current locations on the app. Apple facilitates businesses with large public and private spaces like airports, shopping centers, arenas, hospitals, universities, and private office buildings to register for the Indoor Maps Program. Apple's Indoor maps have been created by using industry standard tools and they only require an existing Wi-Fi network to allow GPS-level location accuracy to help the visitors to navigate their spaces with ease. Apple’s MapKit and MapKit JS APIs provide support for GeoJSON rendering and overlays, which helps users to create their IMDF files to come up with stunning indoor maps in their own apps and websites.