Permissions-Policy: serial
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
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, Serial.requestPort()
and Serial.getPorts()
calls will return a Promise
that rejects with a DOMException
of type SecurityError
.
Syntax
http
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.
Default policy
The default allowlist for serial
is self
.
Specifications
Specification |
---|
Web Serial API # permissions-policy |
Browser compatibility
BCD tables only load in the browser