Dementia sufferers could be monitored with online tracking devices which would record every move they make, say scientists.
British researchers are studying the use of movement trackers which can give dementia patients and their carers intimate details about their lives, including when they go to bed and how much time they spend sitting in front of the television.
Dr Chris Pickford, of the University of Salford, said the technology could provide unique insights into patients' conditions and help spot problems before they become serious.
But critics have raised concerns about whether the use of such devices is ethical and warned that sensitive health data could be 'misused'.
Health wristbands such as Fitbits and other wearable devices - which measure information about the body such as heart rate or the number of steps taken in a day - are increasingly popular among health-conscious adults.