Trax is a GPS specifically made for children and pets. It will allow you to set a perimeter on your device to get notified if your child or pet has gotten out of the area. Put simply, this is something every child should wear. Now, I am sure some men would also want their wives to have these on but let’s remain civilized. In case you wonder, GPS dog tags are not new the technology has been out for years but for children it’s rather the first product.