Human–computer interaction (HCI) researchers, designers and practitioners are increasingly turning their attention to addressing pressing societal issues. One of the major global challenges facing the twenty-first century is the ageing population. This brings about both challenges and opportunities and will motivate societal change. Older people currently make up a larger portion of the population than ever before. More people living into advanced old age means that incidences of dementia, forwhich advanced age is amajor factor,will increase. Dementia is a term for a range of diseases and conditions and dementia care is complex and...