Why is touch control for the Chromebook via the ViewBoard not available?

This is due to a limitation with Chrome OS.

Why do I have to mute the audio manually in Chrome?

This is due to a limitation with Chrome OS.

Why is some education content from Amazon Prime not able to cast in and just show up as a black screen; and why does YouTube streaming video look fine on mobile/laptop/TV, but it cannot cast out to the ViewBoard?

vCastSender for Chrome uses the screenshot mode to catch the casting content and works well with most apps, but if the third-party app content is encrypted, e.g. encrypted video/files, vCastSender cannot catch its content because of its copyright.

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