XR in the 6G Post‐Smartphone Era

In this chapter, the authors elaborate on how the Internet of No Things with its underlying human‐intended services may serve as a useful stepping stone toward realizing the far‐reaching vision of future 6G networks, ushering in the 6G post‐smartphone era. After briefly reviewing the 6G vision, they explain the reality–virtuality continuum in more detail and introduce the so‐called Multiverse for the design of advanced extended reality experiences, ranging from conventional virtual reality to more sophisticated cross‐reality environments known as third spaces. The authors then elaborate on the recently emerging invisible‐to‐visible technology concept, which we use together with other key enabling network technologies to tie both online and offline worlds closer together in an Internet of No Things and make it “see the invisible” through the awareness of nonlocal events in space and time.