> > ...which is less "invasion of privacy" as "responsible parenting."
>
> You don't think it's invasive for parents to be using government toll records to find out what their children -- who must be at least 16 if they're driving -- are doing?
>
> It seems to me that part of "responsible parenting" is at some point trusting your children. It means allowing them to grow up and to have their own lives that are not monitored at all times by their parents.

Yes, and I agree that if parents have to use state records to track their children, there is a problem that began earlier. What I'm saying, though, is that at 16, you don't necessarily have the *right* to privacy. At 16, privacy is a privilege that, hopefully by that time, they will have earned. But give their parents a reason to doubt them, and those parents have the legal right (indisputable), the ethical right -- and I would further argue the *responsibility* -- to know where there children are and what they're doing.