Chad Underkoffler <firstname.lastname@example.org> asks:
> So Bob the PsiCop *can't* scan someone behind them?
> What about through a closed door?
> Could Bob scan Mike if he knew Mike was in the next room over?
> Would Bob know it was really Jill instead of Mike in the room?
> I guess the ultimate question is, if I sneak up behind Bobin the
> hallway, wearing a chameleon suit and really quiet shoes, will he
> know I'm there Psiwise? If so, will he be able to scan me?
> What if I duck behind a corner, outta LOS; can he still scan me?
> Is it "seeing" or "knowing"?
No, if the person is behind a door, or otherwise can't be
located visually, it's difficult to impossible to scan.