&gt; Maybe private data like BSSIDs...<p>Is it private when you&#x27;re screaming it on the street corner for everyone to hear? If we&#x27;re talking about vocal utterances, the law says &quot;no&quot;.<p>It&#x27;s... disappointing that the addition of a computer to a activity makes people lose sight of the similarities between <i>that</i> activity and very similar ones that have long-settled legal treatment.<p>Edit: To drive the point home: There are <i>many</i> jurisdictions that require you to affix your street number to the exterior of the building in which you live using numerals that are sufficiently large to be read <i>clearly</i> from across the street. Noone would <i>honestly</i> make the claim that the data provided by those numerals is in <i>any</i> way private information, and that broadcasting your street number to <i>everyone</i> who was walking or driving by is in <i>any</i> way a breach of privacy. :)