“…The growing investments in XR research have been motivated by compelling visions that anticipate the transformative and ubiquitous influences that extended reality systems hold the potential to achieve in myriad domains of human activity, addressing diverse needs in applications that are significant for individuals, industry, and society. To name just a few: healthcare, [ 1–4 ] medicine, [ 5,6 ] rehabilitation, [ 7,8 ] training, [ 9–11 ] research, [ 12,13 ] education, [ 14–17 ] archaeology, [ 18,19 ] art, [ 20,21 ] design, [ 22,23 ] military, [ 24,25 ] aviation, [ 26,27 ] robotics, [ 28,29 ] gaming, [ 30,31 ] telecommunication, [ 32,33 ] advertising or marketing, [ 34,35 ] shopping, [ 36–38 ] virtual traveling, [ 39,40 ] music, [ 41,42 ] entertainment, [ 43,44 ] and many others that cannot yet be envisaged today. [ 14,45–56 ] This potential can be traced, in part, to the capacity for such technologies and systems to lend human‐perceivable embodied form to now‐ubiquitous digital data, services, and systems.…”