Do Not Track is an internet privacy standard that allows users to signal their preferences for being tracked or not online. It’s supposed to address one of the biggest issues of the 21st century internet how you control who can track what youre doing online isnt in the news. The idea for a standard crystalised about five years ago as a result of pressure from US and European legislators. The industry was challenged to agree to a standard, and if it couldn’t it was made clear that laws would be drafted instead.”]
Source: https://nakedsecurity.sophos.com/2014/08/26/do-not-track-the-privacy-standard-thats-melting-away/