A portable GPS tracker is a convenient tracking option for monitoring people and knowing where they are at any moment. While it’s illegal to track a person without their knowledge, there are many relevant personal GPS tracking uses such as monitoring a child walking home from school, keeping tabs on an elderly relative living alone, or even for allowing a loved one to monitor your whereabouts as you go out for a solo hike or a run. Personal GPS tracking devices are smaller than a typical cell phone and extremely portable, making them easy to carry and use