What's at stake in the Microsoft Supreme Court case

Say you sign up for a free email account. You live in country A, the tech company providing the email service is headquartered in country B, and the data center where the emails are stored is in country C. If the police in one country want your emails, where do they have to go, and whom do they have to ask? That's the logistical nightmare lurking in the background of US v. Microsoft, a case that will be heard before the Supreme Court on February 28th. In US v. Microsoft, law enforcement served a...