There are a variety of stakeholders concerning CCS including the general public who may not have relevant scientific knowledge. Although CCS is an issue for everyone, only a few people have or have access to knowledge that is required as a basis for a rationally motivated consensus. In order to resolve the situation, a mechanism that allows efficient dissemination of knowledge and expedites discussion among the stakeholders is required. The objective of this study is to develop a prototype of such a mechanism, making use of information technologies and to test its practicality.