Earlier quoted context omitted.
The lesson for the modern ago. Don't put stuff into digital form if you want privacy! Some places don't allow use of smart phone. They actually ask you check your phone into a coat check type thing at door! One journalist friend often leaves the smart phone at home.
This sets a terrible precedent. For most, a phone is all or a combination of; house keys, car keys, bank cards, medical records, photo albums, etc. Giving all that up to a stranger (albeit behind a passcode) is a step backwards in security and privacy. An alternative that I have witnessed is places place your phone in a lockable bag that you then carry with you. They unlock the bag when you exit.
The fact that a phone is a single point of failure for so much of your digital AND meatspace life is a terrible precedent, too.