“…Using unpredictable variations in security controls is seen as an opportunity to train staff in carrying out these measures effectively, even those rarely utilized. Additionally, incorporating unpredictability is considered beneficial for enhancing and sustaining practical security awareness, which is acquired through hands-on experience (Nøkleberg, 2021), an unanticipated and thorough implementation of measures could indicate the potential for an imminent occurrence. Taking into account the comprehensive approach to security (Wigginton et al, 2014) where each security measure acts as a barrier to prevent illegal interference, the security-conscious human operator, who applies security measures in a less predictable manner and also pays attention to unusual behavior of passengers and employees, could serve as an extra layer of human obstruction; (Schouten, 2014)) and improve security (by making better security choices); (Kirschenbaum, 2015)).…”