Lighthouse

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Lighthouse is a positional tracking system developed by Valve for SteamVR. It accurately tracks the position and orientation of the user's Head-mounted Display and controllers in real time. Lighthouse enables the users to move anywhere and re-orient themselves in any position within the range of the SteamVR Base Stations. It is a key technology that enables SteamVR to create the first holodeck or full-room experience in Virtual Reality.

Valve plans to make Lighthouse freely available to all hardware manufactures.