Draft
This page is not complete.
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The HTTP Feature-Policy
header xr-spatial-tracking
directive controls whether the current document is allowed to use the WebXR Device API. This policy controls whether navigator.xr.requestSession()
can return XRSession
that requires spatial tracking and whether user agent can indicate support for sessions supporting spatial tracking via navigator.xr.isSessionSupported()
and devicechange
event on navigator.xr
object.
Syntax
Feature-Policy: xr-spatial-tracking <allowlist>;
- <allowlist>
An allowlist is a list of origins that takes one or more of the following values, separated by spaces:
*
: The feature will be allowed in this document, and all nested browsing contexts (iframes) regardless of their origin.'self'
: The feature will be allowed in this document, and in all nested browsing contexts (iframes) in the same origin.'src'
: (In an iframe allow attribute only) The feature will be allowed in this iframe, as long as the document loaded into it comes from the same origin as the URL in the iframe's src attribute.'none'
: The feature is disabled in top-level and nested browsing contexts.- <origin(s)>: The feature is allowed for specific origins (for example, https://example.com). Origins should be separated by a space.
The values
*
(enable for all origins) or'none'
(disable for all origins) may only be used alone, while'self'
and'src'
may be used with one or more origins.Features are each defined to have a default allowlist, which is one of:
*
: The feature is allowed by default in top-level browsing contexts and all nested browsing contexts (iframes).'self'
: The feature is allowed by default in top-level browsing contexts and in nested browsing contexts (iframes) in the same origin. The feature is not allowed in cross-origin documents in nested browsing contexts.'none'
: The feature is disabled in top-level and nested browsing contexts.
Default policy
The default allowlist is 'self'
.
Specifications
Specification | Status | Comment |
---|---|---|
WebXR Device API The definition of 'Permissions Policy' in that specification. |
Working Draft |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
xr-spatial-tracking | Chrome Full support 79 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 66 | Safari No support No | WebView Android No support No | Chrome Android Full support 79 | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.