Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The HTTP Permissions-Policy header xr-spatial-tracking directive controls whether the current document is allowed to use the WebXR Device API.
Specifically, where a defined policy blocks usage of this feature:
navigator.xr.isSessionSupported() and navigator.xr.requestSession() calls will return a Promise that rejects with a DOMException of type SecurityError.
devicechange events are not fired on the navigator.xr object.
Permissions-Policy: xr-spatial-tracking=<allowlist>;<allowlist>A list of origins for which permission is granted to use the feature. See Permissions-Policy > Syntax for more details.
The default allowlist for xr-spatial-tracking is self.