Currently various methodologies, procedures and software tools are used worldwide for the quantitative assessment of the reliability or effectiveness of the systems for protecting objects evaluating the interaction between the breakthrough resistances and the probabilities of detecting by alarm systems. Their frequent drawback is the fact that currently some concrete values or procedures for acquiring the individual variables are missing, or that these variables do not take into account all the significant influences of the environment. This article defines the possibility of a more complex calculation of one of the basic output quantities, i.e. the cumulative probability of detecting an intruder. Besides the newly defined functional dependences between the input parameters of this output quantity, the article also introduces concrete values of some parameters acquired through experiments (e.g. the probabilities of detecting an intruder by the PIR detector under standard or specific conditions).

The municipal police agencies increase the safety of a municipality’s citizens and thus increase their quality of life. When performing interventions, municipal police officers may endanger their safety and health. This paper deals with the analysis of the riskiness of municipal police officers working in the Slovak Republic and the Czech Republic from 2004 to 2019 and the assessment of their occupational safety. The risk analysis was carried out on the basis of a risk matrix and calculations of the probability of attack and injury to municipal police officers. Using the Pearson correlation coefficient, the dependence between the selected variables was investigated. The reliability of this dependence was examined by the determination coefficient. The main result of the paper is the determination of the riskiness category of municipal police officer work based on the assessment of the occupational health protection of officers through statistical indicators of their activities and risk matrix. The results will serve as part of the explanatory memorandum for the proposal of legislative changes in order to increase the occupational health protection of municipal police officers.

Intruder detection in a protected zone can be performed by the physical protection which acts within the object's perimeter and survey's it (patrols, monitoring screens of CCTV systems, etc.), but intruder detection can be also done using active protection elements. Active protection elements include alarm systems (electronic safety and distress alarm systems, CCTV security systems, system for control and management of inputs, portable alarm systems). These can be subdivided based on the area in which these elements detect the intruder into following categories: ones which detect the intruder at a certain point (such as object protection systems), at a certain level, where the intruder must cross a boundary between zones on his way through the detection zone (e.g. perimeter protection systems) and in area when crossing the detection zone (e.g. area protection systems). The development of camera systems allowed for introduction of additional functions, such as automatic intruder detection within the protected zone. Using a single protective element (within a camera system) it is theoretically possible to perform various functions - motion detection, survey and check and analysis of events (security incidents). In electronic security systems, an alarm has to be verified using at least two detectors, a camera system or physical protection. That's why CCTV camera systems are currently a very interesting and often utilizes way of securing an object. The article describes part of the research focused on finding out the probability of intruder detection in a protected zone. The authors focused on the influence of changes in parameters of the camera system on the video-based detection abilities. The article cites results of experimental testing which aimed to verify whether the changes in camera system parameters influences the motion detection success rate. This experiment also confirms information provided by a questionnaire survey performed among manufacturers of security camera systems. The experimental tests performed took into account the requirements placed on them by European technical norms.

Indoor localization systems are gaining increasing relevance due to the limitations of traditional Global Positioning System (GPS) technology in enclosed environments. While the GPS remains widely used for navigation, its efficacy is significantly reduced indoors or in confined spaces. Given the growing societal and technological demand for precise localization and movement tracking within such environments, the development of indoor positioning systems (IPSs) has become a critical area of research. Among the available technologies, Bluetooth Low Energy (BLE) beacons have emerged as one of the most promising solutions for indoor positioning applications. This paper presents an indoor positioning system leveraging BLE beacons, specifically designed for deployment in confined environments. The system employed the Fingerprinting method for localization, and its prototype was experimentally tested within a selected healthcare facility. A series of systematic tests confirmed both the functional reliability of the proposed system and its capability to provide precise localization tailored to the spatial characteristics of the given environment. This research offers a novel application of BLE beacon technology, as it extends beyond simple presence detection to enable accurate position determination at defined time intervals and the relative positioning of multiple entities within the monitored space.