Bring the barrier to measuring down to zero —and help solve Japan's healthcare and social challenges.

In rural and mountainous regions, a shortage of both facilities and physicians — compounded by shrinking public transport — makes reaching a clinic itself a physical and financial burden. Too few people have an easy way to notice early signs of illness or to act on prevention.

Reactive medicine — treating illness only after onset or aggravation — is fiscally hard to sustain in a super-aged society. Approaches that extend healthy life expectancy and keep the body independent, financially as well as physically, are lacking.

From acute to chronic care — including rehabilitation, home care and nursing — providers face excessive workloads and a growing fear of missing something. Infrastructure that eases the manpower burden while preserving quality of care is urgently needed.

After the maternal-and-child handbook, roughly 10–15 years of school-age data go unrecorded. Without longitudinal data there is no lifelong personal health record — and the accuracy of predicting adult lifestyle diseases and dementia cannot improve.