I've had a few moments when shopping or camping, not knowing where my daughter was, a feeling I never, ever want to have again. Even though the busstop is only 1 minute away, I am there to make sure she gets on the bus and home safely. It is a pitty that we have to live in such fear, but maybe this device can bring us some peace of mind? Please drop me a note if you've used one or if you have other thoughts about it.