To cultivate inmates as the suicide prevention gatekeepers in the prison, Taichung Prison set up a "Happiness Catcher" training program for three sessions in the Ai educational block.  Diverse media such as tabletop games and cards are utilized in the class to let the participants familiarize with a wider range of emotional vocabulary and enhance their sensitivity to emotional experiences.  Also, through worksheets and practical exercises, they are prompted to develop empathetic response skills, thereby enabling them to fulfill the role of gatekeepers with the functions of "care, support, and referral."