[user104658]

Originally Posted by Kizzy

Most have smart phones they can be located? I don't think chipping is the answer, all children are vulnerable, do we chip all children? People with dementia are vulnerable do we chip them?

I would never advocate it under normal circumstances but, not to be blunt, unless you have a child with significant non-physical disabilities it's unlikely that you'll be able to understand why it's so different, or just how many extra considerations there are.