Security system for children on school route

To keep safety is one of the most important duties of government. In 2007, Ministry of Internal Affairs and Communications of Japan tested 16 different models of security system for children on school route. One of the models was constructed and tested at an area of a school in Hiroshima City from September to December of 2007. A consortium was established by Hiroshima City, Hiroshima City University, Chugoku Electric Power Co., Inc, KDDI Corporation, etc. to conduct this project. For this model project, we developed new security system for children on school route by using mobile ad hoc network that is constructed based on mobile phone with Bluetooth function. About 700 students used this system for four months. In this paper, we present the outline of this system and the result of the trial. We also describe that this system has good performance and accuracy to keep safety of students on the way to school.