# Do Not Track Do Not Track (DNT) is a formerly official [HTTP header field](https://en.wikipedia.org/wiki/List_of_HTTP_header_fields), designed to allow internet users to [opt-out](https://en.wikipedia.org/wiki/Opt-out) of [tracking](https://en.wikipedia.org/wiki/Web_tracking) by websites—which includes the collection of data regarding a user's activity across multiple distinct contexts, and the retention, use, or sharing of data derived from that activity outside the context in which it occurred. Source: wikipedia --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://doc.bitbrowser.net/fingerprint/11.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.