All but the most ancient of TARDIS Units are fixed
with a Perception Filter that encourage other
beings to ignore their presence.
Effect
The TARDIS gains a bonus to Subterfuge
rolls equal to the TARDIS’ Resolve score. All
TARDIS units of Type 30+ come with this Trait
as standard. Older TARDIS models may be
retrofitted with it by reducing their Story Point
total by 1.