Bill, I suspect you're misunderstanding me. A shielded person in a room, when observed by a CV, is invisible to the CV, but the things they move are visible, so if the SP moves something, the shielded person is given away.
Wil,
I got that bit, or least I think I did. What I think I did was conflate shielded "person" with shielded "room" and then slathered on top the fact that psions are described as being unaware of scans.
IMTU, A clairavoyant has a perspective like a 360°x180° immobile webcam, in re the room. They can't move the point of view, but can change the angle of view. They have a 120x120° field of view... and it can be changed instantly.
That's how it works IMTU also. I imagined a "pont" that corresponded to the peep's visual field and sound detection location; i.e his "head". The peep can than move this virtual head around the room, looking under tables, tracking down sounds, etc. until they need to cross a physical barrier. When a physical barrier is contacted, the "head" or "point" can't cross it. Let me try and explain...
I never had a player interested in psionics. Odd, but true. There were psionic NPCs and groups with access to psionics that interacted with the players however. So I came up with some ground rules for how I as the GM would use psionics. I wanted to be fair. If the players came up against a telepath, that person's gifts would "work" same as they did for the last telepath the players encountered.
The various descriptions in the Clairvoyance section talk about how the peep needs to specify an exact "point" and/or location to scan. There's even a psionic skill called Direction which helps them do this for locations that have only been described to them. The peep uses Direction to lock onto the described location and then uses whatever combination of Clairvoyance, Clairaudience, or CCC to scan the described location.
It's the emphasis on location that led me IMTU to insist on the "cannot cross barriers" approach. The peep isn't going to be able to "pop" into a described location and then have his "sensory point" travel wherever he wishes from that location. The described location, the location determined by Direction is the only place that can be scanned. The same location cannot be a starting point for extended scans.
Let's say the peep is scanning a hotel suite. He had it described to him or even visits a duplicate suite on another floor. He "pops in", performs his scan, and realizes the information he needs is in a desk drawer. He can't "pop in" the desk drawer on the same scan however. He needs to make another attempt, this time using Direction and his own observations to "pop in" the drawer itself and scan there.
Like I said, I was interested in using psionics consistently as a GM. My interpretation could be utter nonsense, but I was applying that nonsense consistently. As a GM you can get away with murder as long as you're consistent.
Unless you have a specific special for detecting psionic observation, you can't tell if you're being observed psionically.
Agreed. While that's not explicitly stated in CT, the descriptions of psionics lead logically to that conclusion.
Regards,
Bill