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by jefftk
2148 days ago
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The x-clint-data header is for experiments, not personalization: Additionally, a subset of low entropy variations are included in network requests sent to Google. The combined state of these variations is non-identifying, since it is based on a 13-bit low entropy value (see above). These are transmitted using the "X-Client-Data" HTTP header, which contains a list of active variations. On Android, this header may include a limited set of external server-side experiments, which may affect the Chrome installation. This header is used to evaluate the effect on Google servers - for example, a networking change may affect YouTube video load speed or an Omnibox ranking update may result in more helpful Google Search results. https://www.google.com/chrome/privacy/whitepaper.html#variat... (Disclosure: I work for Google, speaking only for myself) |
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