StoneTether – is wireless tracking device at long range. It helps to find lost items like keys, wallets or purses, including kids and pets. The device is small/thin and water resistant.
At about 30mm, StoneTether is almost as small as a quarter!
If the lost item is out of sight, for example keys are under the couch, you can make StoneTether audible by using the app. The app is available on Android and iOS. Also if your children stray beyond your chosen distance, you get a notification immediately on your smartphone. Also you can extend the tether futher.
Attach a StoneTether to Your Child and Set the Tether Distance Up to 500 Feet
You can get notifications sent to multiple smart devices, access settings/calendar events in the cloud, and be notified from anywhere.