Good venting system in the building designed to remove smoke, drones designed to pierce the invisibility spell *Yes they were put in the Spy Games book* or the mage can use assensing on the room. Here is the thing I don't get, it states everything has an aura and is there in the astral world "Living things that are not active on the astral plane still cast a reflection of themselves there, called an aura. Any non-living objects appear as faded semblances of their physical selves, gray and lifeless, while the auras of living things are vibrant and colorful."
If the mage in the goggles is assensing he falls under the astral perception field. This means he can see aura's and such as well as with an assensing roll see spells. Since the invisibility spell doesn't work in the astral wouldn't he need just 1 hit on a perception or assensing to notice you. Unless you are using infiltration and trying to keep yourself hidden then it would be an opposed roll.
"Astral Perception
Many Awakened characters can perceive the astral plane from the physical world. This ability is called astral perception. It is the primary sense used in the astral plane; it shows auras, allowing magicians to examine living creatures in the physical world as well as creatures who live on the astral plane."
Reading pg 191 of the 20th Anniversary edition. This has been a point of confusion for me since how the invisibility spells are put they work only on the physical plane and not the astral.
"This spell makes the subject more difficult to detect by normal visual senses (including low-light, thermographic, and other senses that rely on the visual spectrum). The subject is completely tangible and detectable by the other senses (hearing, smell, touch, etc.). Her aura is still visible to astral perception."
So all the mage in the box room has to do is use assensing and score a hit and he can see the aura's of the people in the room and start lobbing mana spells at them, correct?