Abstract
In this paper, we propose a method to confirm the safety of persons using DTN (Delay Tolerant Network). In this method, the user registers personal information on a safety confirmation server on the Internet, and receives a unique ID. When network infrastructure of the disaster area is disconnected by the disaster damage, the user exchanges the ID mutually via DTN through mobile device. When one of the mobile devices is connected with the Internet, the collected ID information is sent to the safety confirmation server. The server matches the ID with personal information and stores its safety confirmation information. We made the application to exchange the ID via DTN. In order to evaluate the application, we verified the communication performance in some situations. The experimental results showed the developed application had sufficient performance to exchange the ID via DTN.
