Website: https://phonetracker247.com/family-locator-app-how-it-works/. Family Locator App: How It Works, Key Features, and How to Choose.Family Locator App: How It Works A family locator app lets approved family members share location and safety updates in one place. The simple tech behind it: 1) Position data: GPS outdoors + Wi-Fi + cell towers compute your approximate location. Accuracy is usually best outside; indoors,