To the problem of applying Wi-Fi access points for registering motion at the site in the absence of a Wi-Fi module

The article describes the problem of registration of human movement on the object and protection of the object against unauthorized access. Global Positioning System which is well proven in open field has low precision within the premises. Due to the rapid development of Wi-Fi technology and the need to organize monitoring of human motion in the protected premises, there is being developed a new approach to registering a person on site using Wi-Fi. The problem of registering unauthorized access to the object by means of Wi-Fi radio network has been considered, its strengths and weaknesses have been studied. Most organizations actively use corporative and public Wi-Fi networks and beneficially apply this well-developed infrastructure for detecting the human presence in the premises and determining their position. It has been stated that using Wi-Fi network is more profitable than installing a special access control system. The aim of the research is to develop a human motion registering system at the site protected without using a Wi-Fi-module. There have been presented experiment results of registering human motion by means of the well-developed Wi-Fi infrastructure, the experiments being conducted to analyze changes of a signal level at different positions of a single person or a number of persons in the premises. It has been inferred that the level of Wi-Fi signal changes when a person or a group of persons are present in the room, even if they don’t have a Wi-Fi-module; this fact helps register the human motion in the protected premises.