Digital video cameras are often installed at private houses, apartments, businesses, warehouses, banks, and shopping centers. The main advantage of digital video surveillance systems over analog devices is that the user can remotely monitor what is happening in the protected area. All you need is Internet access and nothing more. If a user does not need detailed data recording at a small guarded site, it is more reasonable to prefer an analog system. A specialist should do the installation of such methods. Recently, I went to a specialist, and they, in turn, installed home surveillance cameras and a Vivint doorbell camera.