The large imprecision or why the location is inaccurate?
The location of the kid is formed on the GPS signals, Wi-Fi (some models of watches and iOS and Android devices) and mobile networks.
Geolocation sources are used in the following order:
- GPS - give the most accurate location, from 5 to 100 meters;
- Wi-Fi - give the location of average accuracy, from 100 to 300 meters, in rare cases serious errors are possible;
- Mobile networks - give an approximate accuracy, from 300 meters to 1.5 kilometers in the city and up to 10 kilometers outside the city.
At first the kid's device tries to form the location by GPS. However, the GPS signal may not be available indoors, and in some models of watches and smartphones the GPS sensor is weak and because of some hinderings (for example, a transport roof or a pocket) the GPS signal will be unavailable.
If the GPS signal is not available and the kid's device has Wi-Fi, then the Wi-Fi networks that surround the phone are used to form the location. The accuracy is lower, that's why there can rarely be significant errors.
If neither GPS nor Wi-Fi was found, mobile networks (LBS) are used to form the location. The accuracy of the locations is rather low.
You can see how the coordinates were formed and the imprecision in the parent app. If you see GPS, then the location of the kid is formed exactly, Wi-Fi is rather accurate, but errors are possible, LBS (mobile networks) - the location is formed approximately.
When location is formed with mobile network, a point on the map may not move for a long time, and also notifications of entering and exiting from places may not be sent.