In Tokyo it has a lot to do with the fact that you can totally trust strangers and there is virtually no crime. People here, when they want to reserve a seat i

In Tokyo it has a lot to do with the fact that you can totally trust strangers and there is virtually no crime. People here, when they want to reserve a seat in a crowded place or a starbucks, they just throw their iphone on the table and leave it there to mark it is occupied.