I completely agree, the choice of security systems is impressive now. Personally, I think basic functions like video surveillance and motion sensors are required. However, smartphone control, in my opinion, has become a necessity, because it is convenience and control at a distance. For example, when I was choosing a system for my home, I paid attention to Slomin's reviews, where people shared their experiences using their security systems. For me, this has become an important factor in making a decision, because the real user experience says more than any advertisement.