  Technologies can support people with early onset dementia (PwD) to aid them
in Instrumental Activities of Daily Living (IADL). The integration of physical
and virtual realities in Mixed reality technologies (MRTs) could provide
scalable and deployable options in developing prompting systems for PwD.
However, these emerging technologies should be evaluated and investigated for
feasibility with PwD. Survey instruments such as SUS, SUPR-Q and ethnographic
methods that are used for usability evaluation of websites and apps are used to
evaluate and study MRTs. However, PwD who cannot provide written and verbal
feedback are unable to participate in these studies. MRTs also present
challenges due to different ways in which physical and virtual realities could
be coupled. Experiences with physical, virtual and the couplings between the
two are to be considered in evaluating MRTs.
