[Webkit-unassigned] [Bug 225783] PCM: How can I check if PCM feature is enabled in a given Safari instance?

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=225783

--- Comment #1 from John Wilander <wilander at apple.com> ---
Hi! It’s highly unlikely that we will provide any signal about the user’s setting for PCM since that would constitute a fingerprinting vector. I don’t know what the Chrome team’s reasoning is there. We’ve deliberately designed PCM so that sites can not tell if it’s enabled and what its inner state is. It has a debug mode to help with testing.

There will likely be one or two breaking changes such as name changes we hinted at in the most recent blog post. The reason is the standards process where browsers try to align as much as possible. A simple enabled/disabled signal would not help there.

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