Permissions-Policy: serial
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
.
The default allowlist for
serial
is
self
.
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