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The Hardest Surveillance Evidence to Find May Be the Evidence That Disappears

The Hardest Surveillance Evidence to Find May Be the Evidence That Disappears

The Hardest Surveillance Evidence to Find May Be the Evidence That Disappears

A surveillance system can shape a criminal case long before a prosecutor describes it as evidence.

A license-plate reader may place a vehicle near a location. A cellphone request may generate a map of movement. Facial recognition may produce an investigative lead. A gunshot-detection system may create a report that sends officers in a particular direction. An AI tool may draft language that later appears in a police narrative.

Each step can matter, even when the final report does not clearly identify the technology involved.

Disclosure is not the same as proof The ACLU of Massachusetts has launched a Surveillance Discovery Project with model motions for defense attorneys seeking information about surveillance tools and preservation of data that might otherwise be automatically deleted. The accompanying reporting in WIRED describes the project as a way to expose technology that may be hidden inside ordinary-looking case files.

That distinction matters. Asking whether a system was used is not an argument that the system produced accurate information. It is a request to examine the method, the data, the settings, the error rate, the human decisions around it, and any records showing how the result entered the investigation.

A court cannot assess reliability when the relevant record has vanished.

The administrative record is part of the case In practice, disclosure often depends on unglamorous details: retention periods, vendor contracts, audit logs, request forms, dispatch records, and follow-up emails. The information may sit outside the police report, sometimes with a private company or another government office.

That creates a procedural problem before it becomes an evidentiary one. If the defense does not know which system was used, it cannot ask for the right records. If the records are routinely deleted, a later request may produce nothing and leave the absence looking like proof that nothing happened.

For Louisiana defendants, especially people from communities already subject to intensive policing, transparent discovery should include the technological pathway that produced an accusation. The question is not whether innovation sounds sophisticated. It is whether a person can meaningfully test the evidence used against them.

More posts by Danielle Baptiste