http permissions policy directive
Permissions-Policy: usb directive
Limited availability
The HTTP Permissions-Policy header usb directive controls whether the current document is allowed to use the WebUSB API.
Specifically, where a defined policy blocks WebHID usage, the usb property will not be available.
Syntax
Permissions-Policy: usb=<allowlist>;
<allowlist>- : A list of origins for which permission is granted to use the feature. See
Permissions-Policy> Syntax for more details.
- : A list of origins for which permission is granted to use the feature. See
Default policy
The default allowlist for usb is self.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.