My immediate thoughts are. I don't see why they wouldn't be, so long as its a regular door. How are you going to get the rope through, though I guess something like parachute cord is pretty small, and would fit between the door and frame. If you can manage, do a test first. When nobody is home, tie some rope around the hinge, and hang on it using your hands. Thrash around a bit. if it breaks during the test, then you know it wasn't strong enough, but better to break during a test than the real thing.