The biggest exception is Web Notifications and while that’s useful the desktop situation suggests there’s more than a little validity to the spam concerns. I would like that for a couple of sites but suspect I’d get really tired of selecting the “never allow” option in prompts.
The moment Firefox implemented one of the many hardware APIs aggressively pushed and promoted by Google, they immediately discovered it was used for fingerprinting: https://twitter.com/denschub/status/1582730985778556931
Chrome doesn't even show a prompt in this case. So much for "control".
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Chrome still allows web developers to enumerate attached MIDI devices without user consent or even a notification, btw.
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