I'm in agreement with Fullback. This whole cockpit door thing is just bloody stupid. It's just window window dressing for public perception. We all know that if somebody wants to hijack a plane they would simply wait by the galley untill a suitable moment arose when the door was open. Where the new door helps is if there were to be a riot in the plane then the pilots can feel safe that as long as they don't open the door, nobody can get to them. And that's were the door is usefull. The average pax wouldn't know or couldn't care if a non uniformed person was in the flight deck - i.e a familly member.
Far better to concentrate on passenger profiling as a way to stop potential incidentas in the future - much the same as EL AL does.