Geofencing is an advanced application of a mobile with GPS. This technology allows a virtual perimeter to be set around a specific geographical area. When a device with GPS enters or leaves this zone, it can trigger a pre-defined action. For example, a field service management app can use geofencing to automatically clock a worker in when they arrive at a client's site. Retailers can ... https://mobileattendance.com.sg/mobile-with-gps/