See here: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11075110" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11075110</a><p>In short, you can do that. But in real life, you typically won&#x27;t get the data. That&#x27;s why police and prosecutor bust down your door instead of mailing you a subpoena asking you to bring incriminating evidence to the police station.