Oliver
Basically Ontology is a philosophical school of thought that objects have..not so much will as in capacity. And wards can be irrevocably tied to a person or a bloodline - that was essentially the job of a cornerstone and why the first born son had to be present to smear his blood onto the cornerstone so his family is linked into a ward. (As an aside, early wardsmiths used to use a stone knifes but the Pureblood families all have very ornate silver ones).
Anyway, I started to think ; wards are like..veils. Pieces of magic that can shift, move and adapt - like they could breathe. What if someone could take a ward and give it capacity ?
Humans have intent - every single action we do or do not do is obvious in our subconscious intent. If a ward could be charmed to read the intent and recognise it (and if it had capacity) it could reject certain people from entering the boundaries. Even if its just for a few minutes it could be long enough to get them out.
Thats sort of a ..bitesize version of my thesis. You can see why its been taking over my life.