There are approximately 1.4 billion iPhone users worldwide and more than 3 billion Facebook users. In the next few decades, many of those users will die, leaving behind years of text threads with loved ones, precious photos and videos stored on phones and cloud servers. What happens to all of it? Steve Paulson sat down with Carl Öhman, author of The Afterlife of Data: What Happens To Your Information When You Die and Why You Should Care.