Question $6$ Two user groups with physical disabilities exist: visual and motor impairments. Highlight the limitations for normal input and output devices for visual impaired user and indicate what can work best for this group. $[5]$What benefits are there to designing technology for senior citizens?Preece et al $(2019)$ defined interaction design as: the process of designing products to support the way people communicate and interact in their everyday lives. What activities does interaction design involve?According to Shneiderman et at $\backslash ((2014)\backslash )$ it is important to look at not only mobile and ubiquitous computing but also hardware and software diversity. Identify three technical challenges for the next decade and explain your reasoning.