Re: [csswg-drafts] [mediaqueries-4] Add `prefers-handedness` media query for left/right-handed users (#13215)

On desktop, left-handed users can flip buttons or use a left-handed mouse, so the issue largely disappears. On mobile, there’s no equivalent. Handedness directly affects reach and accuracy, yet the web exposes zero signal for it. We already expose more detailed device and interaction signals (safe-area insets, pointer types). For a single boolean, the accessibility benefit vs added fingerprinting risk is unusually favorable for ~10% of users.


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Received on Friday, 19 December 2025 18:47:51 UTC