###### Abstract
The necessity was indicated for further quantitative studies of behaviour during evacuation, the auxiliary function of the elevator, and the influence of group relations on evacuation, especially in the context of the individual physical characteristics of people and problems with movement or fatigue. Identifying the behaviour of individual people during a fire accident in connection with their perception of risk was studied by [PERSON] and [PERSON] [13]. The authors highlighted the need to raise the awareness of the rescued persons about the possibility of escaping from the threat. Such options include appropriate marking and quick provision of information on emergency exits and emergency procedures. The role of proper training was also emphasised--for both individuals and groups--as was the importance of information about the location and availability of fire extinguishers. Fire brigades and rescue teams often use the tactic of keeping victims at the point of danger. Two opposing points of view on this tactic are presented in [14]. In the described research, firefighters' and survivors' direct reports and practical experiences were analysed. The conclusions indicate that the tactic of staying in place is outdated and may cause catastrophic errors in assessing the situation and the effectiveness of a rescue operation. Hence, the more significant role was highlighted of the rapid two-way delivery of information. On the one hand, the access of emergency services to the video monitoring system is important, especially infrared cameras, and the use of artificial intelligence algorithms can automate the detection and prediction of incidents. On the other hand, quick and unambiguous messages from rescue teams can be directed at the rescued. Modern smartphones offer this option. High-rise residential buildings can be inhabited by large numbers of families and people who are unable to communicate directly with each other. Contemporary human relations and mutual isolation make this condition even worse. Therefore, informing occupants about threats and the current rescue action requires other communication tools. These tools need to be able to connect with the occupants immediately and should be able to connect with many people simultaneously, even if they are located in other parts of the building. Modern smartphones offer such possibilities [14]. Thanks to smartphones, it is possible to connect instantly with many people in different locations of a building at risk of fire. The universal possession of mobile phones allows direct access to information to virtually all building occupants. As a result, the occupant has fast and reliable access to the necessary data and information needed to decide his/her reaction. Instant access to such information is crucial during emergencies, especially when firefighting equipment and tools might not function as expected or even be available such as in the case of developing countries [15]. Such fire disaster preparedness, which entails appropriate planning, earmarking resources, and simulation of disaster response exercises, is pivotal in effective disaster mitigation, especially during evacuations [15; 16]. The overall goal during evacuation is to save the lives of the building's occupants [15]. The factors influencing evacuation have been highlighted in the literature to include: the speed of the occupants, the number of occupants, the evacuation route, the evacuation travel distance, and the density of the occupants [15; 17]. It has been reported that awareness about fire preparedness is crucial for building occupants, and that poor and inadequate awareness about preparedness has contributed to many fire disasters [15; 18]. Therefore, when occupants are aware, they know what to do in order to avert a fire disaster; they identify risks in the building and immediately avoid them [15]. Nonetheless, none of the existing studies explored the use of the smartphone as a preparedness tool to support fire evacuation in high-rise buildings.