A social experiment conducted between 2010 and 2013 found ICT (Internet and Communication Technology) to be quite effective in creating and expanding informal social networks among the elderly for preventing social isolation and death in isolation. It shows that ICT can serve not only as a conduit for active social interaction but also helps the middle aged who realize that it is a communication tool for the elderly with a high risk of isolation. The experiment showed that elderly people were supported according to the strength of an area and indicated the feasibility for practical use of ICT in community-based care systems that provided high quality assisted living for elderly people.