Making video games feel more real
19 November 2013 Last updated at 01:59 GMT
A San Francisco Bay area start-up is seeking funding to develop technology that could help video game players get a greater physical connection with the virtual world.
The Reactive Grip handheld controller mimics the force and resistance of virtual objects in games, using small motors which move against the user's skin.
The company behind it, Tactical Haptics, says the technology could be extended to other applications - for example, to give doctors undertaking remote surgery more precise feedback when making incisions with robotic arms.
The BBC's North America technology correspondent Richard Taylor put the technology through its paces.
You can follow Richard on Twitter @RichTaylorBBC.