Virtual reality's teething problems of users experiencing motion sickness and eyestrain could soon be eliminated with new motion sensing technology, according to Valve's managing director Gabe Newell.

While the rising interest of Oculus Rift, and mobile-centric variants such as Gear VR, has triggered a craze of investment in virtual reality, some consumers believe the technology is uncomfortable on the eyes.

John Carmack, the chief technology officer at Oculus Rift, said during a keynote at the Games Developers Conference on Wednesday that motion sickness was one of his biggest fears with the technology.

“People like the demo, they take it home, and they start throwing up,” he told a gathering of developers.

A newly announced motion tracking technology, which Valve says it will distribute freely to hardware partners, is said to use lasers which can read the position of a VR helmet and reproduce a person’s real-world movements with exceptional accuracy. The tech, called Lighthouse, is believed to be crucial in eliminating motion sickness.

He claimed that “zero percent of people get motion sick” when they try Valve's system.

On Sunday, the smartphone and electronics group HTC .