Ive been looking for GPS tracking watches for my 6 year old that will run off from school. This seems to be the best one Ive found so far because its not actually a watch and goes into a pocket. Unless he takes his clothes off he wont be able to remove it. But its expensive to keep. The device is like $60 or something on sale all the time but the service is $40 a month. Anyone have experience with any of these new kid tracker devices?