Japan is facing a dementia crisis – can technology help?

Elderly people aged 65 and over now make up nearly 30% of Japan's population.

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Police say such cases have doubled since 2012.

Elderly people aged 65 and over now make up nearly 30% of Japan's population - the second-highest proportion in the world after Monaco, according to the World Bank.

The crisis is further compounded by a shrinking workforce and tight limits on foreign workers coming in to provide care.

Japan's government has identified dementia as one of its most urgent policy challenges, with the Health Ministry estimating that dementia-related health and social care costs will reach 14 trillion yen ($90bn; £67bn) by 2030 - up from nine trillion yen in 2025.