Designing a Safety Confirmation System that Utilizes Human Behavior in Disaster Situations. This paper introduces a use case to discuss how to design services for disaster situations as well as to elucidate the development and evaluation of our safety confirmation system, which utilizes human behavior in disaster situation. The success of the safety confirmation system based on information sharing among evacuation centers depends on the intercenter movement of humans. In order to know whether the safety confirmation service would work effectively or not after a massive disaster, we conducted a survey that examined how many evacuation centers were visited after the East Japan Earthquake and the periods over which the evacuees visited the centers. As a result, we confirmed that many evacuees were still visiting centers 72 h after the earthquake, making our technology effective in responding to a disaster.

Adaptive Crowd Control using Promotion Signage to Promote Smooth Evacuation Crowd control is one of the ways to prevent unexpected events at places where a large number of people gather. With technology developments, new evacuation systems are proposed in prevention planning. Recently, digital promotion signage has been used recently for promotion and advertising in public and commercial spheres. It is pointed that digital promotion signage attracts more attention than the traditional emergencyexit sign and the effect of the digital promotion signage to control human evacuation flow is verified by simulations. In this paper, we discuss a method that changes the contents of signage adaptively to the situations of congestion. This idea provides one solution for situations that many people are caught in the congestions and applying the idea to new application fields is also discussed.