Tk response header indicates the tracking status that applied to the corresponding request.
Tk: ! (under construction) Tk: ? (dynamic) Tk: G (gateway or multiple parties) Tk: N (not tracking) Tk: T (tracking) Tk: C (tracking with consent) Tk: P (potential consent) Tk: D (disregarding DNT) Tk: U (updated)
DNT:1data until such consent has been determined, and further promises to delete or permanently de-identify within 48 hours any
DNT:1data received for which such consent has not been received.
Tk header for a resource that claims not to be tracking would look like:
|Tracking Preference Expression (DNT) |
The definition of 'Tk header field' in that specification.
|Candidate Recommendation||Initial definition.|
|Android webview||Chrome for Android||Edge Mobile||Firefox for Android||Opera for Android||iOS Safari||Samsung Internet|
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