Look, none of us should be surprised that police departments across the country use things like Stingrays -- sophisticated surveillance devices that suck up cell phone communications -- in their investigations. Still, more than a few of those PDs have insisted in court on trying to keep that specialized gear out of the limelight. Consider cases like this one in Baltimore last year, where a police officer was nearly held in contempt for withholding information about cell phone tracking practices; they often hinge on the fact that law enforcement officials entered into non-disclosure agreements with the FBI to keep usage under wraps. Turns out, that's not exactly the full story. According to a statement released by the FBI earlier this morning (and obtained in full by Ars Technica), there really aren't any legal stipulations meant to keep law enforcement from admitting stingrays have been used.