You may be interested in researching new advances in home security systems and door locks. I recently saw two articles in the Wall Street Journal that talk about the lastest technology being used in home security. This is not in any way an endorsement of these brands, products or systems; merely a resource I am offering if you are interested in this topic.
Home Security Cameras: Wall Street Journal September 3, 2014 entitled “Private Eyes”
Locks: Wall Street Journal October 15, 2014 entitled “Locks, Evolved: Your Phone Can Open Doors”