Re: For your kids - would you?
I seem to be the first parent replying in this thread who is against that idea. Firstly, I have much more faith in Allah than in little GPS devices. Secondly, it is a very new technology and I wouldn't want my kid to go through that kind of unneccesary surgery. And thirdly: I'm living in one of the safest cities on earth, so the likelihood of an abduction is smaller than that of something going wrong with the device.
Even if everything works perfectly fine you will always have the issue of when is the right time to remove it. You say 18, your kid will say get rid of it as soon as he or she will be in their teens or maybe even earlier. Where do you draw the line here?