September 7, 2012 | By Hanni Fakhoury

EFF Asks Appeals Court to Rehear Cell Site Tracking Case

Location privacy generally, and cell site tracking specifically, have been two hot issues this year, particularly since the Supreme Court's January ruling in United States v. Jones that installing a GPS device on a car without a search warrant violated the Fourth Amendment. After Jones, we were optimistic that both courts and legislatures would begin to take location privacy seriously and demand warrants before granting law enforcement access to a map of our every movements over an extended period of time. But it hasn't turned out that way. In August, the Sixth Circuit Court of Appeals issued a very bad decision (PDF), ruling law enforcement did not need a search warrant to track a cell phone in real time.

So this week EFF and a number of other civil liberties organizations joined together in an amicus brief to ask the Sixth Circuit to reconsider its decision. The Sixth Circuit heard argument in the case just a few days before the Supreme Court issued its opinion in Jones. Without the benefit of an in-depth discussion of the impact of that critical decision, the Sixth Circuit's opinion naturally failed to appreciate the changing legal landscape in gutting privacy protections for millions of people.

Privacy advocatesincluding EFF, recognized this as a dangerous and troubling result. In our amicus brief filed Tuesday, we note that cell phone tracking is even more intrusive than the GPS tracking involved in Jones. A GPS device affixed to a car really follows the car, which is a proxy for someone's location only some of the time. But most people carry their phones in their pockets or purses wherever they go, including their homes. Cell phone tracking thus enables true, round the clock 24/7 tracking of an individual in a way a physical GPS installed on a car is unable to do. 

We hope the Sixth Circuit will reconsider its earlier decision, particularly as more courts begin to weigh on in the issue. The Fifth Circuit Court of Appeals will hold oral argument on the issue of warrantless cell site tracking on October 2 in a case where we filed an amicus brief. We'll be there in court to personally argue in favor of a warrant requirement, and we'll definitely be telling the court to not follow the Sixth Circuit's misguided opinion. 

Deeplinks Topics

Stay in Touch

NSA Spying

EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.

Follow EFF

Congress just voted to repeal #broadbandprivacy rules & we need you on our side in the coming battles. Support EFF.

Mar 29 @ 12:12pm

Watch this video tutorial and share it with your friends to make your Facebook posts more private.

Mar 29 @ 9:47am

EFF kicks off intro security trainings for tech newbies at the @SFPublicLibrary tonight. Tell your friends!

Mar 28 @ 4:49pm
JavaScript license information