Permissions-Policy: usb directive

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The HTTP {{HTTPHeader("Permissions-Policy")}} header usb directive controls whether the current document is allowed to use the {{domxref("WebUSB API", "WebUSB API", "", "nocode")}}.

Specifically, where a defined policy blocks WebHID usage, the {{domxref("Navigator.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.

Default policy

The default allowlist for usb is self.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{HTTPHeader('Permissions-Policy')}} header
• Permissions Policy