In a February hearing, according to a transcript, Judge Campbell asked the prosecutor, "Were there warrants obtained in connection with the use of this device?"

Last week, the feds argued that they should not have to explain how they tracked Rigmaiden, because it would reveal too much information "since its public release could harm law enforcement efforts by compromising future use of the equipment." So, we can't tell you if the tracking system we use violates the 4th Amendment, because, you know, you might stop us from using it. Very compelling, but all too typical of law enforcement these days. Hopefully the court rejects the argument.