Since the citizens used to play a subsidiary role in rescuing sudden cardiac arrest victims only by their giving early 119 call and early cardiopulmonary resuscitation (CPR) until the paramedics arrive, it led to a 3% survival to discharge rate. Recently, Japanese government has declared their intention of approving automated external defibrillator (AED) use by laypeople, which will increase citizens' role in promoting public access defibrillation (PAD), an easy, safe, and most effective approach to saving one's life.