GM Heath:
To clarify, his watch device is not a tracker. It merely detects motion nearby (like a radar). If you've seen the movie Aliens, think of it like those devices. So if any "invisible" creatures approach, he should be able to tell that something is nearby through movement.
As Kyrillian is showing you the device, you see a white glow from the edge and a slow beep.
"Something's coming this way," he says nervously, looking back down the hall. "It's still a little ways off but getting closer."
OOC: OK, exactly what I was picturing it was.
BIC: Desiraye goes back into a tactical shooting posture and tries to figure out where the target is.