How can the exploding senior population be accommodated? Japanese struggle towards inclusive design

It was the mid-1980s when Japan was told that it will become a highly aged society in the years to come. To cope with the rapid change, a research and development project was conducted with government funding, followed by policy implementation of several kinds, in particular the proposal of dwelling design concepts acceptable in people's later years. The paper attempts to report progress, and discusses the remaining issues to be resolved to bring about an inclusive society.