NACDL - Carpenter v. United States

Carpenter v. United States

Brief of Amici Curiae Electronic Frontier Foundation, Brennan Center for Justice, The Constitution Project, National Association of Criminal Defense Lawyers and National Association of Federal Defenders in Support of Petitioner.

Carpenter v. United States

Case Details

Case No.: 16-402
Jurisdiction: United States Supreme Court

Key Topics in the Case

Privacy | Third Party Doctrine | Historical Cell Site Location Information | Warrantless Search and Seizure | Riley v. California | Jones

Documents

Carpenter-v-US-Amicus.PDF

Prior Decision

Decision below 819 F.3d 880 (6th Cir. Apr. 13, 2016).

There has been a dramatic increase in location data generated by cell phones, collected by third parties, and routinely obtained by law enforcement without a warrant. Cell Site Location Information (CSLI) paints a revealing portrait of a person's movements, presenting even greater privacy concerns than the GPS tracker at issue in Jones. The Third-Party Doctrine is "ill-suited to the digital age" and should not apply to CSLI.