Most ghosts cannot pass through solid objects, so doors and windows will be
enough. Those who CAN pass through solid objects would need the really
gratuitous markings to stop them.
That would probably be a separate skill, although he might be able to use
it on specific jaunts like this one in which these specific rules of Spirit
Sensitivity apply.
Re: Questions & Concerns
Most ghosts cannot pass through solid objects, so doors and windows will be enough. Those who CAN pass through solid objects would need the really gratuitous markings to stop them.
That would probably be a separate skill, although he might be able to use it on specific jaunts like this one in which these specific rules of Spirit Sensitivity apply.