my friend Matt, who has four middle- and high-school-age sons, has told each one, “I’m your dad. Until you are grown, it’s my job to know more about what’s going on in your life—and therefore on your phone—than anyone else.” His sons know that he can, and will, look over their shoulder at any moment, and that he can, and will, and does, pick up their phone without needing to ask and browse through their messages and apps and history.
