# Extended Reality: Types and Applications
## 3 Applications of Extended Reality
### Extended Reality and Its Usage
#### 3.1.1 Virtual Reality and Its Usage
It also allows you to evaluate the design, functionality, and appearance of buildings when choosing apartments or houses, for example, for demonstration to buyers or tenants. This makes viewing objects quick and eliminates the need to go to them. Some clients may not have the skills to read drawings and may find it difficult to imagine how the building will look after construction or correctly estimate the scale of the building [28]. A virtual presentation of the project using a virtual reality headset can easily demonstrate how the project will look, and in case of additional wishes of the customer, slightly change the project on the fly, for example, change the texture of the walls, floor material, move sockets and switches, rearrange furniture, etc. [29]. * Navigation and Information--Modern navigation apps like Google Maps have a street view mode [30] that allows virtually walking around any point in the world, such as streets, museums, hotels, or natural attractions, to decide whether a place is worth visiting. This is useful for planning trips and finding unfamiliar places. Users can also add their photos and videos to help future travelers. Some hotels and tour operators provide VR presentations of rooms, restaurants, attractions, and other infrastructure facilities to attract more customers using modern technology [31]. Some museums also use virtual reality to partially show exhibits, such as the Louvre Museum [32], thus enticing tourists to visit and view all the exhibits. Also, in museums, virtual reality technologies are very often used to add interactivity to exhibitions and installations [33]. * Entertainment and Media--Three-dimensional computer games are a type of virtual simulation, as the gameplay takes place in a simulated virtual environment displayed on a regular monitor. HMD headsets allow for even greater immersion in the gameplay by tracking the user's head [34], enabling hands-free control of the gameplay. Thus, adding the ability to use HMD headsets to a 3D game and turning it into a full-fledged VR application allows for additional interactivity and translation of the game, such as the use of spatial controllers and/or hand motion capture, which transfers the movements into the game, improving the gaming experience and the player's immersion in the game. Recently, many games have been developed with implemented virtual reality support, and some projects were created only for VR mode, for example, the game Half-Life: Alyx [35]. Also, due to the modern sedentary lifestyle, people often have health problems, and VR can be one of the solutions. There are games in which the main goal is to entertain the player with the help of a rhythm game in which it is necessary to move. This can help people to increase their activity. An example of such a game is VR BeatSaber, which positively affects players [36]. The use of more human interface devices, such as a steering wheel with pedals or a joystick, allows the application of VR not only for games but also for training using various simulators, for example, training forklift drivers or car driving instructors in a virtual environment [37]. * Robotics and Manufacturing--Stationary robotics is one of the main tools in manufacturing. They are often used for repetitive work. With added sensors, it can do sorting and correct placing of objects. The use of a stationary robot allows complex technological processes to be performed, while it is possible to change the robot configuration and program to perform new tasks. XR is a useful tool for monitoring robot tasks, controlling robot operation in real-time conditions, programming new tasks, and providing safe movement simulation of stationary robots (Figure 2). This is useful for studying for real or remote training of fresh staff to work with stationary robots [38; 39]. They can safely study with a simulated robot in a virtual room, using VR, while the cost of error is reduced to zero, since all simulations are virtual.