If your children are old enough to carry smartphones, you don't need to give them separate GPS devices. Simply make sure they install Life360 Family Locator on their iPhones or Android handsets and then you can use the app to track them on your phone.

Life360's simple, colorful interface puts icons for all of your family members onto a map and also shows you other key places around them, including hospitals, police stations and the homes of registered sex offenders.Best of all, LifeCam360's app and core service are free, though you may pay extra for premium features such as tracking a non-smartphone

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