Meet Hi Map: one of the smallest GPS trackers around for tracking kids and pets. It uses an accurate tracking system to let you monitor the position of your loved ones on your iOS or Android devices. Just wrap the tracker around your child’s wrist, and you will be able to track his/her movements in real time.
The device supports geo-fencing, alerting you when it goes out of the set boundaries. It is also waterproof. Did we mention that you can call the unit in case of an emergency? The product is expected to ship in May 2016.