Identifying the perp is something I didnt give thought... But I take my stand at the stairs. Dad covers the back door and stays in his room, calls the authorities, I take cover by the top of the stairs and cover the stairwell/ front door.
Flaws in my plan are 2nd story break-ins or if someone with no ill intent sneaks in. I will be buying a weapon light now. I also like the challenge/password idea.