Calling them &quot;willingly&quot; transmitted is a bit of a stretch, given that people don&#x27;t have much choice to turn <i>just</i> them off and defaults are a powerful thing.<p>The useful parallel is the general inventorying and tracking of people. Luckily we don&#x27;t have the rest of totalitarianism (yet), but this cornerstone is well laid due to naive designers.<p>BTW <i>you</i> were the one who brought up the subject of Nazis.