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How to keep track of friends and family on your iPhone
Use your iPhone to find out where your kids are.
And while tracking the location of older teens probably won’t happen without some intense negotiation, it can be handy to see when younger kids have made it to school or a friend’s house. Google Maps for Android and iOS is one of the best ways of doing this, as it’s cross-platform and is an app that a lot of people have installed on their phones. Tap on a contact’s name to see exactly where they are, to turn off location sharing with this person, or to add a location-based notification (this can be triggered when someone arrives at or leaves a particular place).
Or read this on The Verge