There's apparently a special bag for cell phones that some performers and teachers are leveraging in order to prevent phone use/ unauthorized photos during events. Attendees have to place their phones in them and lock them prior to going in and can only unlock them in the lobby or outside the venue. If you attended something where you were asked to lock your phone up, how would you react?
Inspired by: https://answermug.com/forums/topic/73058/what-s-one-thing-kids-today-will-never-experience-that-you-think#siteforum_post_581277