http permissions policy directive
Permissions-Policy: serial directive
Limited availability
The HTTP Permissions-Policy header serial directive controls whether the current document is allowed to use the Web Serial API to communicate with serial devices, either directly connected via a serial port, or via USB or Bluetooth devices emulating a serial port.
Specifically, where a defined policy blocks use of this feature, requestPort() and getPorts() calls will return a Promise that rejects with a DOMException of type SecurityError.
Syntax
Permissions-Policy: serial=<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 serial is self.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.