My comment is rethink not locking doors front and back. At home I keep a .380 Ruger in my pocket or continue to wear a Smith j frame .38 in a holster. Both are so lightweight that they offer no discomfort. If I don't know you, I don't open the door. Although I was once big and strong, arthritis has changed everything. There was a time when many would have thought twice about jumping me, but those days are past.