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I came here to point out _exactly_ this. And I wouldn't stop at permissions, these things should be session-only and not persist across visits.

The use case here is to exactly restore your window arrangement (https://web.dev/multi-screen-window-placement/#the-getscreen....), a feature that people working in IDEs or terminal windows probably will appreciate.

It still needs more control. Advertisers will use _anything_ for fingerprinting.