Was actually hoping for something people tend not to notice, something at the ceiling or whatever. (Using his infiltration ability to pick out an item/place that doesn't get much attention.)
The aura doesn't have to be visibly burning and glowing, by the way, it could be heat waves or somesuch too.
If people look at <item>/<person>, it's easy to see it is possessed, but that doesn't mean it's easier to see than it would normally be afaik, certainly not as far as giving light or something. That's how I understand it anyway.
If it's just "burning item" on the other hand, he could maybe find a candle or something, heh.
Oh, as for the Dual Natured thing:
SR4A: Dual Natured: "<snip>innate dual nature is different from astral perception in that dual natured critters can always sense both the physical and astral worlds without having to shift back and forth."
So there's a difference between awakened people with astral perception and creatures that are inherently magical. But PC Free Spirits do get different rules on some stuff, so it's your call and I'm fine either way. Just wanted to explain why I thought what I thought.
