See here: https://news.ycombinator.com/item?id=11075110 https://news.ycombinator.com/item?id=11075110 In short, you can do that. But in real life, you typicall

See here: https://news.ycombinator.com/item?id=11075110 https://news.ycombinator.com/item?id=11075110 In short, you can do that. But in real life, you typically won't get the data. That'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.