• A deprecated non-standard HTTP header field designed to allow Internet users to opt out of 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. The “Do Not Track” header was originally proposed in 2009 and adopted by most major browsers. However, the header failed to find widespread respect among publishers, due to lack of legislation requiring companies to support the DNT header as well as confusion about the header’s meaning. ← Wikipedia

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