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Restore the Fourth Files Amicus Brief in Carpenter v. USA

Tuesday, August 8th, 2017 – Restore the Fourth has filed an amicus curiae in the case of Timothy Ivory Carpenter v. United States of America. In this case, cell-site location information (CSLI) was obtained by subpoena from a cellphone carrier pertaining to the suspect’s cellphone.

In submitting this brief, we seek to urge the court on the following points:

  • From the nature of CSLI, it can be derived that privacy is relational: That is, that even when people disclose their information to third parties, that should not mean that they do not have a reasonable expectation of privacy.
  • CSLI will become more revealing over time: This is due to the increasing density of tower locations, and the increased power of computers to algorithmically parse a given set of information on people’s locations to predict where they will be in the future.
  • Police use of CSLI comes with a high risk of abuse: Such as, usage for LOVEINT (ie. officials with access to government surveillance and data collections utilizing it to spy on lovers, exes, etc.), police concealment of stingray use, and precedents for CLSI used to harass political dissidents abroad.

For these reasons, we urge that the Court should adopt a warrant standard for governmental searches and seizures of CSLI. We hope that the Court will see Carpenter v. USA as an opportunity to make a much-needed reexamination of the ‘third-party doctrine.’

Restore the Fourth would like to thank our counsel, Mahesha Subbaraman, of Subbaraman PLLC, for contributing this brief.

 

Please contact:

Alex Marthews

National Chair

rt4chair@protonmail.com

(781) 258-2936

One reply on “Restore the Fourth Files Amicus Brief in Carpenter v. USA”

[…] In August, the non-profit 4th amendment advocacy organization Restore the Fourth filed an amicus brief to the court. In that brief, an attorney with Restore the Fourth argued against the third party doctrine, and urged the court to recognize that people still have a reasonable expectation of privacy even once they have disclosed information to a third party, such as a cellular service provider. The brief also highlights the high risk of abuse from obtaining cell site location information without a warrant by law enforcement officers. Restore the Fourth also argues that cell site location information will reveal even more information about a person in the future. “This is due to the increasing density of tower locations, and the increased power of computers to algorithmically parse a given set of information on people’s locations to predict where they will be in the future,” Restore the Fourth stated on a post on their website. […]

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