# Assessing the Risk of Spreading COVID-19 in the Room Utilizing Low-Cost Monitoring System
###### Abstract  
High hygiene standards were established during the COVID-19 epidemic, and their adherence was closely monitored. They included the need to regularly wash one's hands and the requirement to cover person's upper airways or keep at least a two-meter space between individuals. The ITS (Information Technology Systems) community made a big contribution to this by developing methods and applications for the ongoing observation of people and the environment. Our major objective was to create a low-cost, straightforward system for tracking and assessing the danger of spreading COVID-19 in a space.The proposed system collects data from various low-cost environmental sensors such as temperature, humidity, CO\({}_{2}\), the number of people, the dynamics of speech, and the cleanliness of the environment with a significant connection to elements of wearable electronics and then evaluate the level of contamination and possible risks and, in the event of a high level of risk, alerts the person to take actions that can reduce or eliminate favourable conditions for the spread of the virus. The system was created at the Laboratory of industrial control systems of the University of Zilina, Slovakia. The experiment demonstrates the ability and feasibility to control the number of people in a space depending on particular symptoms like fever, coughing, and hand hygiene. On the other hand, the laboratory's temperature, humidity, and air quality should be controlled to reduce the spread of illness.  
monitoring; COVID-19; sensors; smart systems +
Footnote †: journal: Medical  
ranging from 19% to 78% in later studies [2; 3]. Therefore, measuring a fever may not be very reliable in terms of clinical diagnosis. One challenge in controlling the pandemic is that many infected patients who have no symptoms can still spread the virus, and this percentage varies, sometimes reaching 50% or more. This variability is related to factors such as the COVID-19 variant and whether or not the individual has been vaccinated. Therefore, it is necessary to design systems that observe the various symptoms of the virus and inform people in time to reduce the transmitting the virus.  
Our proposed system for measuring COVID-19 in a room is very important for several reasons. It can help with monitoring the air quality in indoor spaces where people gather, such as offices, schools, or public transportation. This can provide an early warning system for potential outbreaks and help with preventing the spread of the virus. Secondly, a low-cost system for measuring COVID-19 in a room could be useful in determining the effectiveness of ventilation systems and other measures designed to reduce the transmission of the virus. This information could help to inform decisions about how to improve ventilation in indoor spaces to reduce the risk of transmission. Lastly, our system for measuring COVID-19 in a room could help to reassure people that the space is safe and that appropriate measures are being taken to reduce the risk of transmission. This could be particularly important in workplaces or public spaces where people may be hesitant to return due to concerns about the virus.