If your home security system lacks glass break detection, then it might be time to add this technology to your system. Your system already contains motion detection, of course, and that may be enough to stop an intruder from following through with his plans. But here’s another consideration: If the intruder thinks that breaking the glass on your door or window is his best way to get into the house, then the break detection may be the only thing that sends him running when the glass shatters.