The Cambridge-based team has produced a device that can monitor a home and the person living there without cameras or microphones.

By installing it early in someone’s dementia journey, it can “learn” their regular behaviour and alert carers to problems or changes in patterns.

James said: “Are they waking more at night? Has their mobility changed?

“It can spot subtle changes over a long period of time, but also alert carers to falls straight away.

“We hope it will give people with dementia independence for longer and give their carers confidence.