You're taking it too literally Thrawn.
Know where they are.
Know who their friends are.
Know what they're doing (Going to a Movie? which one? Who's driving? Who's going with?)
Set rules the must follow (In by, say, Midnight on a Friday night)
etc.
etc.
I might add, my wife really disliked her "intrusive" father until she became an adult, then one day she went up to him and gave him a big hug, and said "Dad, thanks for being strict with me when I was a teenager"....She'd never seen him cry until that point. It was a cry of relief for him, because we believe that he thought he was too strict with her, she believes not.