With a New York Judge upgrading the warrant requirement for a cell site simulator from probable cause to eavesdropping, it is important to take a look back at our census and the data researchers have compiled about these invasive surveillance tools.

The Indianapolis Metropolitan Police Department has had StingRay cell site simulator devices since 2012, according to recently released documents.

Rochester Police Department in New York responded to our Cell Site Simulator Census with a rare look into the pricing and packaging of the cellphone surveillance tech: a completely unredacted quote list of Harris Corporation products.

After initially claiming to be unable to locate any such document, the FBI now insists that it cannot release its comprehensive list of police departments across the country that use cell phone trackers.

Advanced cell phone tracking devices known as StingRays allow police nationwide to home in on suspects or to log individuals present at a given location. But before acquiring a StingRay, state and local police must sign a nondisclosure agreement with the FBI, documents released last week reveal.