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Security & Privacy Self‐Review: Client Hints

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Tim Cappalli edited this page Mar 26, 2025 · 1 revision

2.1 What information does this feature expose, and for what purposes?

This feature does not expose any new data.

2.2 Do features in your specification expose the minimum amount of information necessary to implement the intended functionality?

This feature does not expose any new information.

2.3 Do the features in your specification expose personal information, personally-identifiable information (PII), or information derived from either?

This feature does not expose any new data.

2.4 How do the features in your specification deal with sensitive information?

This feature does not expose any new data.

2.5 Does data exposed by your specification carry related but distinct information that may not be obvious to users?

No

2.6 Do the features in your specification introduce state that persists across browsing sessions?

No

2.7 Do the features in your specification expose information about the underlying platform to origins?

No

2.8 Does this specification allow an origin to send data to the underlying platform?

This feature exposes a set of preferences for user experiences / user flows which the user agent may pass to the underlying platform as part of the client platform interaction.

2.9 Do features in this specification enable access to device sensors?

No

2.10 Do features in this specification enable new script execution/loading mechanisms?

No

2.11 Do features in this specification allow an origin to access other devices?

No

2.12 Do features in this specification allow an origin some measure of control over a user agent’s native UI?

Yes, this feature is designed to provide hints to the user agent around a desired workflow/experience.

2.13 What temporary identifiers do the features in this specification create or expose to the web?

None

2.14 How does this specification distinguish between behavior in first-party and third-party contexts?

This feature does not impact first party vs third party contexts.

2.15 How do the features in this specification work in the context of a browser’s Private Browsing or Incognito mode?

This feature works the same in all browsing modes.

2.16 Does this specification have both "Security Considerations" and "Privacy Considerations" sections?

Yes, the WebAuthn specification has both sections.

2.17 Do features in your specification enable origins to downgrade default security protections?

No

2.18 What happens when a document that uses your feature is kept alive in BFCache (instead of getting destroyed) after navigation, and potentially gets reused on future navigations back to the document?

This feature does not impact this behavior.

2.19 What happens when a document that uses your feature gets disconnected?

This feature does not impact this behavior.

2.20 Does your spec define when and how new kinds of errors should be raised?

There are no new errors or error conditions introduced by this feature.

2.21 Does your feature allow sites to learn about the user’s use of assistive technology?

No

2.22 What should this questionnaire have asked?

n/a

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