Permissions-Policy: usb directive
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental:This is anexperimental technology
Check theBrowser compatibility table carefully before using this in production.
The HTTPPermissions-Policy headerusb directive controls whether the current document is allowed to use theWebUSB API.
Specifically, where a defined policy blocks WebHID usage, theNavigator.usb property will not be available.
Syntax
http
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 forusb isself.
Specifications
| Specification |
|---|
| WebUSB API # permissions-policy |