https://www.engadget.com/2017/05/17/...where-you-are/

Google made plenty of VR- and AR-related announcements at I/O, its annual developer conference, today. Not only will Samsung's Galaxy S8 and LG's upcoming flagship be Daydream-compatible, the company also announced that it's working on standalone Daydream VR headsets. Enabling the latter is a unique technology called WorldSense, a new set of positional tracking tools that doesn't require any cameras or complicated setup. This sets the Daydream headsets apart from the competition -- the current HTC Vive, for example, needs external room sensors; Google's upcoming headsets wouldn't.