The Challenge
Japan is currently one of the most rapidly aging societies in the world. More than 29 percent of the population is aged 65 or older, and one in three older adults is living with dementia or mild cognitive impairment (MCI). At the same time, there is a growing shortage of care workers, placing significant pressure on care systems. Nichii, Japan's largest provider of nursing care and medical services, a key challenge within its facilities. While reminiscence therapy is known to improve emotional stability and communication, it is difficult to implement consistently due to limited staff capacity. This created an opportunity to develop a solution that could deliver meaningful engagement without increasing the workload of caregivers. *Reminiscence therapy: A clinical method that promotes emotional stability in dementia patients by sharing and reflecting on memories.
The Solution
STRATEGY: Nichii addresses this challenge by introducing a new model for cognitive care that operates within existing resource constraints. This work introduces a new way to deliver reminiscence therapy at scale. By combining a familiar analogue interface with genAI, it transforms reminiscence therapy from a manual activity into a continuous, system-driven experience. The innovation lies not in AI itself, but in how it reconstructs time-specific experiences that stimulate memory, emotion, and communication. IDEA: Radio Time Machine is an Al-powered system delivered through a nostalgic radio device that allows users to access and experience moments from the past. By turning a dial to a specific year, users trigger the generation of a radio program based on that moment in time. The system reconstructs "today" from the selected year by combining historical context, music, and narration, creating an immersive and recognizable experience. Because the system generates content dynamically, it produces a new program every day, encouraging repeated use and sustained engagement. Users can engage with past news and music in their daily lives, helping to reduce the behavioral and psychological symptoms of dementia. The product is designed to stimulate memory recall, support emotional expression, and encourage communication between users, caregivers, and family members. It is currently being tested and validated across caregiving facilities in Japan.