Japan is facing a dementia crisis – can technology help?

Although humanoid robots are being developed for the near future, Assistant Professor Tamon Miyake says the level of precision and intelligence required will take at last five years before they are safely able to interact with humans.

"It requires full-body sensing and adaptive understanding - how to adjust for each person and situation," he says.

Emotional support is also part of the innovation drive. "Early detection of age-related diseases is key," says Hidenori Fujiwara, a Fujitsu spokesperson. "If doctors can use motion-capture data, they can intervene earlier and help people remain active for longer."

Meanwhile, researchers at Waseda University are developing AIREC, a 150kg humanoid robot designed to be a "future" caregiver. Poketomo, a 12cm tall robot, can be carried around in a bag or can fit into a pocket. It reminds users to take medication, tells you how to prepare in real time for the weather outside and offers conversation for those living alone, which its creators say helps to ease social isolation.

"We're focusing on social issues... and to use new technology to help solve those problems," Miho Kagei, development manager from Sharp told the BBC.