At least one company, Valve, believes it has solved the discomfort problem with headsets. In an interview at the developer conference, Gabe Newell, the president and co-founder of Valve, said he, too, had reacted badly to most headset demonstrations, describing them as the “world’s best motion sickness inducers.”
Mr. Newell said the company had worked hard on its virtual reality technology to eliminate the discomfort, saying that “zero percent of people get motion sick” when they try its system. Part of its solution is a motion tracking system that uses lasers to accurately reproduce a person’s real-world movements in the virtual world. Mr. Newell said Valve would offer the tracking system, called Lighthouse, free to hardware manufacturers.
During a 15-minute demonstration of the Valve headset, it caused no discomfort for a reporter. In one segment of the demonstration, a colossal whale comes precariously close to the viewer, who is standing on the prow of a wrecked ship.
See the full story here: http://www.nytimes.com/2015/03/05/technology/solution-to-nausea-puts-virtual-reality-closer-to-market.html?_r=0