They can tell you, in most cases, their name, and where they are from, and what they do for a living, and what hobbies or interests they might have, as well as their ethnicity, and what their family is like, and what religion they profess (if in fact they profess any), but they can’t tell you, I don’t think, much beyond that, because there are only so many things that will constitute a person’s identity, and after a while a person will exhaust them, or be unable to think of any more of them.