https://css-tricks.com/apple-declined-to-implement-16-web-apis-in-safari-due-to-privacy-concerns/ [css-tricks com]

16 data-collection APIs that #Apple kept out of #Safari ( see also
https://nu.federati.net/url/273304 )


Note that most of these are also unimplemented in Firefox / Gecko based browsers, possibly for similar reasons.
Article link came from @feld