Virtual reality technology can also be used by people with severe physical handicaps to gain more control and independence. Using only their eyes, people wearing head-mounted displays can manipulate computers that direct robots to perform tasks. Arts, leisure, and entertainment. Virtual reality applications are most numerous and growing most rapidly in the arts, leisure, and entertainment. Video games are one of the largest markets in computer technology.
Children can build structures using virtual blocks and then enter the structures created.
While Beier and Bell are exploring the promise of virtual reality, they also are aware of several health, ethical, and psychological issues that the technology raises. The effects of being in an immersive virtual reality environment for a long time are not known. In the spirit of sharing new knowledge, researchers often put virtual environments on the World Wide Web, where they can be easily copied by others. However, three-dimensional virtual reality models are so accurate that unauthorized persons could use them to manufacture an object. Beier wonders about the possible copyright and patent issues, especially in relation to his industrial research.