a (hidden) drive to your computer using a reasonably surreptious link that is difficult to trace. Say, an IR optical link, a single bare (unjacketed) optical fiber, a LAN with hidden nodes, or a similar system. Maybe an

I find the idea of the optical fiber very interesting. Is there such a beast currently available? I really don't know anything about fiber, and therefore it would be very difficult for me to construct such a system myself...