i can tell you that polycarbonate is extreemly tough to get into via impact. i once locked myself out of my house, and tried to break the "glass" in the front door to gain entry. my neighbor was home, so he knew someone was not trying to break in. neither of us knew that the previous owner has installed plastic into the door. i used at first, a rock, when that failed, i thought,"hmmm, must be tempered". so, i got my neighbors ICE SPUD! that, eventually cracked the moulding around the "glass". i never did gain entry. i waited at the neighbors for my wife to get home from her second shift job. some 6 hours later. now, in your situation, the one thing that crossed my mind is escaping a burning house. if it is a second floor safe/bedroom, i would sugest looking into one of those roll away ladders that you can hook onto the window frame. other than that, i suppose you could rig up some sort of remote control device that would spray mace, or peppre extract into the b.g.'s face, or maybe some sort of dye like they use in bank robberies. other than that, and of course the video system, i think you have it pretty well covered. i am glad to see i am not the only one who worries about stuff like this. i do not have a safe room, but i really would like one.