Because of geographical, topographical and meteorological conditions, Japan is subject to frequent natural disasters such as typhoons, torrential rains and heavy snowfalls, as well as earthquakes and tsunami [4]. A team of University of Kochi launched a novel information management system COACHES (Community Oriented Approaches for Comprehensive Healthcare in Emergency Situations), which enables the efficient and quality provision care and relief to the all evacuees [7, 10]. In this paper, we evaluated prototype its web service information sharing among relief workers from the perspective of evacuees through questionnaires and interviews. We found that in order for COACHES to be operational in the field, evacuees need the ability to limit the type of relief workers who can see their information and the types of information they can release.