I am using SF Canvas to embed an external Web Application in a VisualForce page in my org. The content is being successfully loaded in an IFrame in the browser. The page needs access to the USB feature (FeaturePolicy usb) which is set by the external server as header. Inside the IFrame, the feature is disabled. Is there a way to set it for the frame by setting an HTML Attribute like this:
<iframe allow="usb *">
Or maybe another way to solve the issue?