> that they would have full access to the monitoring and we would review it together.

Can you imagine your own parents asking you for the same (at any age)?

Perhaps it's not technically spying when they know they are being monitored or spied on, but it's not something better...

We always discuss power abuse in terms of corporate bosses, politicians; but parents seem to abuse their power very frequently. Almost everywhere I've worked most of my coworkers have had exactly this attitude. I.e. that they can spy on their kids (cell phone/iPad/computer), or invade their privacy in all sorts of ways, and they always do this to protect them of course, so nice of them. If it were to happen to me, I'd be leaving home as soon as possible at least - and I don't think I'd come back to visit.