&gt; But just because I agree to let Google read my location to send me traffic warnings before heading out to work doesn&#x27;t mean I want the FBI to grab that data without my knowledge so they can determine if I might be a troublemaker<p>Constitutionally, privacy is a pretty cut-and-dry concept. Information is either private or not. Private information isn&#x27;t &quot;information I don&#x27;t want the government to have&quot; it&#x27;s &quot;information I don&#x27;t want anyone else to have.&quot;<p>I&#x27;m not saying we couldn&#x27;t restructure the law to express what you&#x27;re talking about. But it&#x27;s not just a matter of extending our existing principles to this new situation. You&#x27;re throwing the concept of &quot;privacy&quot; on its head by saying that you have this information that&#x27;s &quot;private&quot; but that at the same time some third-party entity (and its employees) actively sifts through to target advertising to you.