People that stay on chat lines and communicate with other people through the computer. Their modem seems to be their tongue, to some extent. Human contact is missed and I think the point of the film is once you miss human contact, you're vulnerable. Nobody out there really knows you.
Nobody knows who anybody really is because everybody's disguised in some way.
So I think this is teaching us, hopefully, that there's more out there than just computers. He found out stuff he never thought he'd uncover. Then we started looking at people's identity and people losing identity, and we hit upon the idea of bringing it into the world of computers where somebody could be shadowed - where you could have a profile of somebody. If you were capable of getting into their profile, their medical records, bank records, driving records, you can change their life and maybe take it away from them.