Let’s roll back the time machine a century. Imagine you were a rich individual and you had a huge home with assets that needed protection. What was your recourse? Hire macho security guards with stern faces to ward off miscreants. Slowly the human guards gave way to padlocks, combination locks etc. And then the advent of the home security system – independent and isolated. And towards the latter part of the century, integrated systems with a wired or wireless backhaul to a central command. That then evolved into more sophisticated perimeter security with cameras, motion detectors etc.
But even in the face of such dramatic changes in home security, one principle has remained steady. It is all about the perimeter. Secure the entrance and exits and you are safe.