I bought my son a pretty expensive boke for his birthday. It's one of those wheelie bikes kids ride into cars, although my son is pretty smart and responsible that I am 100% positive, he will not be doing wheelies down the road, he sometimes is careless when locking his bike up. These bikes get stolen pretty often. I want to get some sort of small tracking device that can be hidden well that has some mileage range. I live in a pretty quiet and small town so odds are, if the bike is stolen, it's from some kid around the neighborhood.