“…Voice input [11,25,26,30,38,39,47,49,50,51,55,56,57,58,59,60] can be command-based or natural language processing (NLP) [56]. Touch interaction [39,46,48,51,53,56,57,59,60,61] can include both near and far touch. Near touch in this context refers to directly touching the interaction trigger, whereas far touch refers to a mapping of the touch interaction, i.e., ray-casting on a distant object [56].…”