The ultimate VR systems completely immerse the user's personal viewpoint inside the virtual world. This is a helmet or a face mask that holds the visual and auditory displays. The helmet may be free ranging, tethered, or it might be attached to some sort of a boom armature. Telepresence Telepresence is a variation on visualizing complete computer generated worlds. This a technology links remote sensors in the real world with the senses of a human operator.
Fire fighters use remotely operated vehicles to handle some dangerous conditions.
Surgeons are using very small instruments on cables to do surgery without cutting a major hole in their patients. The instruments have a small video camera at the business end. Robots equipped with telepresence systems have already changed the way deep sea and volcanic exploration is done. NASA plans to use telerobotics for space exploration. Mixed Reality Merging the Telepresence and Virtual Reality systems gives the Mixed Reality or Seamless Simulation systems.