GPS

GPS (Global Positioning System) uses signals from orbiting satellites to determine ground position. Smartphones equipped with GPS receivers use GPS for maps, navigation, and location services. A-GPS (assisted by cell towers) can reduce initial fix time.

QR codes combined with GPS are used in location-based services. Tourist stamp rallies can verify visitors are at the correct checkpoint by checking GPS after QR scan. Store QR codes that open Google Maps navigation are another example of GPS integration.

QR codes can store coordinates directly using the geo URI scheme (geo:35.6812,139.7671), which map apps can use to display the specified location. This is used for event venue directions, real estate property locations, and emergency evacuation point guidance.