A system to present disaster information based on person's
movement was proposed. We implemented an experimental
system by using geofencing and evaluated the system in an
urban area. We confirmed that our system notifies disaster
information when a user enters the fence with Wi-Fi on by the
experiment. The location was at 20-30m outside the fence.
When exiting the fence with Wi-Fi off, we found that the
information is delivered at the place more than 100m outside
the fence. Wi-Fi is necessary for precise detection of location
by using geofencing.