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A Flawed Algorithm: The Wrongful Arrest Exposes Failures in One of the Oldest Police Face-Recognition Tools in the US


Florida Man Wrongly Arrested for Attempting to Lure Child Using Face-Recognition Technology, ACLU Sues Police Departments Over Inaccurate Match

  • The American Civil Liberties Union (ACLU) is suing Florida police departments over a wrongful arrest caused by a flawed face-recognition tool.
  • A 93% facial match was used to identify the suspect, but this score does not necessarily indicate how likely it is that two images show the same person.
  • The lawsuit seeks compensatory and punitive damages and calls for policy overhauls at the City of Jacksonville Beach, the Jacksonville Sheriff, and the Pinellas County Sheriff in their official capacities.
  • This case highlights the need for greater oversight and regulation of face-recognition technology in law enforcement to prevent future wrongful arrests.



  • A recent case has brought to light the failures and inaccuracies of one of the oldest police face-recognition tools in the United States. The American Civil Liberties Union (ACLU) is suing two Florida police departments over the arrest of a Fort Myers man, Robert Dillon, who was wrongfully arrested for attempting to lure a child after police relied on a flawed face-recognition match that was inaccurate.

    The incident took place shortly before midnight on November 2, 2023, at a McDonald's in Jacksonville Beach, where a man allegedly approached a girl under 12 and repeatedly asked her to leave with him. She refused. After he approached her a second time, she called for her mother. The man left before the police arrived.

    The investigating officer then requested a search of license plate readers for two vehicles registered to Dillon, covering the days around the incident. Neither turned up anywhere in the county, according to the complaint, which says the results were omitted from the warrant application.

    Dillon was arrested at his home in front of his wife, held overnight in a cold cell, and transported in a caged, unlit van. He pledged the title to his truck to make bond. The arrest came during peak stone crab season, causing him to fall behind on rent and nearly lose his home. His mug shot stayed online for nearly a year, removed from the county website only after a TV reporter intervened.

    Dillon's case is not an isolated incident, but rather part of a larger issue with the use of face-recognition technology in law enforcement. A 2016 study by Georgetown Law's Center on Privacy and Technology found that Pinellas County Sheriff's Office conducted no audits of how the database was searched and required no reasonable suspicion to run a query.

    FACES, a face-recognition system operated by Florida’s Pinellas County Sheriff's Office, has been in operation since 2001 and is one of the oldest police face-recognition systems in the country. The system uses an image of a suspect, compares it against the gallery, and returns a ranked list of possible matches.

    However, according to the ACLU, FACES has long operated with little oversight. In Dillon's case, the officer relied on a "93 percent match" on facial features, which is misleading because the scores it emits represent how much two images look alike to the algorithm, not how likely it is that they show the same person.

    The American Civil Liberties Union is suing the investigating officer and the JSO sergeant individually, as well as targeting the City of Jacksonville Beach, the Jacksonville Sheriff, and the Pinellas County Sheriff in their official capacities. The lawsuit seeks compensatory and punitive damages and asks a court to order all three agencies to overhaul their face-recognition policies.

    Nate Wessler, deputy director of the ACLU's Speech, Privacy, and Technology Project, said that "No one should lose their freedom or be scared to leave their house because an algorithm got it wrong." He also called on Florida police departments to make amends and adopt safeguards to prevent future wrongful arrests.

    The case highlights the need for greater oversight and regulation of face-recognition technology in law enforcement. It is a reminder that even the most advanced technologies can be flawed and inaccurate, and that human judgment and oversight are necessary to ensure justice is served.

    The ACLU has also reported at least 15 known wrongful arrests in the United States attributed to face-recognition technology. Another case from earlier this year involved the wrongfull arrest of a North Carolina man who was arrested after an 85 percent match led to his arrest. By the time the charges were dropped, he had lost his home, his job, and custody of his two kids.



    Related Information:
  • https://www.ethicalhackingnews.com/articles/A-Flawed-Algorithm-The-Wrongful-Arrest-Exposes-Failures-in-One-of-the-Oldest-Police-Face-Recognition-Tools-in-the-US-ehn.shtml

  • https://www.wired.com/story/wrongful-arrest-tests-one-of-the-oldest-police-face-recognition-tools-in-the-us/


  • Published: Wed Jun 10 10:56:58 2026 by llama3.2 3B Q4_K_M













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