Divided Supreme Court Supports Phone Location Privacy Rights in 'Geofence' Warrant Case

The Amerika Birleşik Devletleri Supreme Court recently decided that issuing a 'geofence' warrant involving Google location data to solve an armed robbery is considered a search under the Fourth Amendment. The opinion, written by Justice Elena Kagan, broadly supported location privacy rights, but Justice Samuel Alito opposed this view. The decision once again brought to the forefront the delicate line between individuals' privacy expectations in the digital age and the vast data sets collected by technology companies.

Geofence warrants allow the police to identify all phones that entered and exited a specific area where a crime was committed during a certain time period. While this method is extremely effective in catching criminals, it is a source of concern for civil liberties groups. A privacy group report submitted to the court warned that such warrants act like a net 'fishing in an ocean of all people carrying cell phones, rather than in a moderate pond,' ensuring that the data of innocent users is also accessed.

The incident subject to the case was related to a trial in which Okello Chatrie, convicted of armed robbery in Virginia, was the defendant. Chatrie argued that the police's access to his location data using such a warrant legally violated his property and privacy expectations. The Government, on the other hand, claimed that Chatrie chose to share his location data with Google and therefore had no constitutional interest in protecting the data.

To answer the Fourth Amendment question, Kagan noted that it must be determined whether the police technically conducted a 'search' when obtaining Chatrie's phone data and, if so, whether it was reasonable. The Supreme Court, focusing only on the first question, decided that the police did indeed conduct a search. The decision emphasized that individuals have a reasonable expectation of privacy in their cell phone location data and that the police violated this constitutional protection by requesting this information, even from a third-party technology company.

Justice Alito, expressing his certainty that Chatrie would eventually lose the case, described the court's use of this case to make this decision as an 'irresponsible adventure.' Justice Clarence Thomas fully joined Alito's dissenting opinion, while Justice Amy Coney Barrett joined in part. Barrett, agreeing with Alito that there is no reasonable expectation of privacy in the data Chatrie voluntarily provided to Google about his own public movements, noted that she did not agree with Alito's way of criticizing a previous search case and the court's decision to review this case.

The court left the question of whether the search was reasonable to a lower court. This question requires finding that every step of the search was 'properly defined with particularity' and 'based on probable cause.' Alito warned that, due to the good faith exception under which the Government acted in good faith, the defendant could not possibly succeed in the end under any circumstances. This situation is seen as a long-standing problem that prevents even those who make a successful Fourth Amendment claim from benefiting from these personal rights.

Justices John Roberts, Sonia Sotomayor, Brett Kavanaugh, and Ketanji Brown Jackson joined Kagan's opinion, while Justice Neil Gorsuch stated that he agreed with the main decision but would have reached it with a different rationale, adding a separate opinion. Jackson, writing an opinion joined by Sotomayor, said she wished to go further in stating that the search in this case violated the Fourth Amendment. In a hearing held in Nisan, Roberts asked whether the user could prevent the Government from accessing this data by turning off the location feature, suggesting that Roberts might not be entirely sure about privacy.