Meet Hi Map: a smart, compact GPS tracker that lets you monitor your kids and pets in real-time. It uses an accurate GPS system to let you trace the location of your loved ones one your iOS or Android device. The geofencing feature allows you to set virtual boundaries and get an alert when your children cross them.
The device is waterproof and durable. It comes integrated with GSM for voice calls in case the tracker loses its signal. Yet another interesting Kickstarter project.