IEEE Consumer Electronics Magazine - July/August 2023 - 35

FIGURE 1. General metaverse system architecture for healthcare applications.
close as possible to reality. In addition, regular
healthcare services and sessions, such as consultations
and follow-ups, can be performed virtually.
Third, the interface and access component
comprises different equipment and devices that
play a crucial role in facilitating immersive experiences
for users and providing them with the
means of accessing the virtual world. For example,
head-mounted displays (HMDs), such as virtual
reality (VR)/augmented reality (AR) headsets
and smart glasses, allow their users to have a sensory
experience that resembles physical reality.11
Similarly, haptic technology adds the additional
dimension of touch to the immersive and sensory
experience of users, where their tactile sense is
activated in metaverse to provide them with a
feeling like that of physical reality.12 Furthermore,
web 3.0 technology, which is an emerging technology
that implements the concept of self-sovereign
identity for users in the World Wide Web to
allow them to retain control of their data and content,
is utilized in the interface and access component
to ensure that users' data in the metaverse is
safe and secure.13 Finally, to make the experience
in the metaverse more immersive, various cutting-edge
technologies are utilized, such as AI,
July/August 2023
decentralized ledger technology (DLT), distributed
computing, digital twins, Internet of Medical
Things (IoMT), and telecommunications.
Metaverse Enabling Technologies
The metaverse aims to change and transcend
the current state and limitations of the Internet,
and bring it into an immersive and more engaging
environment.14 However, this transition is
highly dependent on the advancements of the
metaverse enabling technologies, as each one of
them plays an irreplaceable role in unlocking the
full potential of the metaverse. Figure 2 summarizes
the key metaverse enabling technologies,
and their is a brief description of their roles in
the following.
Extended reality: XR is a collective term that
encapsulates AR, augmented virtuality (AV),
VR, and mixed reality (MR). The disambiguation
of these fundamental terms is of paramount
importance, as they cannot be used
interchangeably.15 AR is augmenting the perception
of the real world with virtual objects,
which is achieved by mixing digital objects
with the real environment in real-time and
35

IEEE Consumer Electronics Magazine - July/August 2023

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