Apple recently improved the selection of indoor airport maps in Apple Maps with an expansion to 30 new structures. Apple worked with each individual airport and the associated airlines in order to provide the most accurate data possible, including directions to gates, details about food courts and other amenities, and the ability to jump between floors/levels. A button tagged “look inside” clues users it to the availability of indoor maps at the supported airports. According to TechCrunch, Apple relies on WiFi inside each airport to help triangulate the user’s iPhone and accuracy is to within a few meters. The new indoor maps are available at major airports including Amsterdam Schiphol, Baltimore/Washington International, Berlin Tegel, Chicago O’Hare and Midway, Denver, Detroit, Geneva, Hong Kong, Houston, Indianapolis, Las Vegas McCarran, London Heathrow and Gatwick, Los Angeles, Miami, Minneapolis–Saint Paul, Nashville, New York JFK, LaGuardia, and Newark, Philadelphia, Pittsburgh, San Diego, San Jose, Seattle, and Vancouver. Apple plans to add more airports over time.