Anecdotal story from the US: a boomer I know went to a play at a theatre, and since they don't allow photography, they put these stickers... on the phone case,

Anecdotal story from the US: a boomer I know went to a play at a theatre, and since they don't allow photography, they put these stickers... on the phone case, not the camera. So now he has two stickers on the back of the phone case that don't come off easily.