User acceptance of a personalised home lighting system based on wearable technology

Light/dark cycles play an essential role in people's performance, mood and daily rhythm. This study aimed to evaluate an early prototype of a personalised home lighting system including body-worn loggers. A convenience sample (N = 28) wore the devices for 23 h in the field and were given a demonstration of the lighting system components. Participants reported on questionnaires their acceptance of the lighting system and experience of physical comfort and visual appearance of the body-worn loggers. Semi-structured interviews were also held. In a hierarchical linear regression, physical comfort of the loggers explained 35.8% of the variance of 'the behavioural intention to use the system in the future', and 'performance expectancy' explained 50.6%. The interview data helped understand the reasons for the physical and psychological discomfort of wearing the devices. Many participants reported they were not comfortable about using a mobile phone for presence detection in the home.