Yes, I suppose that does seem like an interesting solution. But it seems like more trouble to go through than it's worth. Not to mention that if the new owner

Yes, I suppose that does seem like an interesting solution. But it seems like more trouble to go through than it's worth. Not to mention that if the new owner is sufficiently paranoid, then maybe they wouldn't trust that changing the password is sufficient to remove your access. So it would be all for naught.