St. Clair County
County record. Includes every city and agency within St. Clair County.
Technology presence
What these categories mean
- ALPR
- Automated license plate readers (ALPR): camera systems that automatically capture, read, and log vehicle license plates with location and time, producing a searchable record of vehicle movements.
- Fixed cameras & RTCC
- Agency-operated fixed video cameras and the real-time crime centers (RTCC) that aggregate live and recorded feeds for monitoring. Extends the Electronic Frontier Foundation's Atlas, which enumerates real-time crime centers and camera registries but not standalone fixed-camera estates.
- Face recognition
- Software that matches faces in images or video against a reference database to identify or verify individuals.
- Drones / UAS
- Uncrewed aerial systems (UAS), commonly called drones, operated by an agency for overhead observation, imaging, or sensing.
- Gunshot detection
- Networks of acoustic sensors that detect and locate suspected gunfire and alert an agency.
- Body-worn & dashcam
- Officer body-worn and in-vehicle dashboard cameras that record encounters; public access to the footage is frequently restricted.
- Doorbell & camera registry
- Programs that give an agency access to privately owned camera footage: doorbell-camera partnerships, citizen camera registries, and private-camera integration platforms.
- Cell-site simulators
- Devices that mimic cell towers to locate or identify nearby mobile phones. They are often called Stingrays, or IMSI catchers after the international mobile subscriber identity (IMSI) number that identifies each phone on a network. Adjacent: communications surveillance outside the visual/sensor core.
- Predictive policing
- Software that forecasts where crime may occur or who may be involved, to direct policing. Adjacent: analytics rather than a sensing deployment.
- Social-media monitoring
- Tools that collect and analyze public social-media activity for an agency. Adjacent: open-source/communications monitoring outside the visual/sensor core.
The record, by agency
Saint Clair County Sheriff's Office
The Saint Clair County Sheriff's Office operates 20 Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
Marysville Police Department
The Marysville Police Department operates five Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
The Marysville Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Port Huron Police Department
The Port Huron Police Department operates 24 Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
The Port Huron Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Marine City Police Department
As of April 2024, the Marine City Police Department operates nine Flock Safety automated license plate readers. The agency stores ALPR data for 30 days.
Sources (via the EFF Atlas): Flock SafetyThe News & ObserverThe News & Observer
The Marine City Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
St. Clair County Sheriff's Office
The St. Clair County Sheriff's Office has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
The St. Clair County Sheriff's Office operates one drone as of 2018, according to data compiled by the Center for the Study of the Drone at Bard College.
Sources (via the EFF Atlas): Center for the Study of the Drone at Bard Collegewww.faa.gov
St. Clair Police Department
The St. Clair Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Capac Police Department
The Capac Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Clay Township Police Department
The Clay Township Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Yale Police Department
The Yale Police Department has desktop access to Michigan State Police's face recognition system, the Statewide Network of Agency Photos (SNAP).
Sources (via the EFF Atlas): Michigan State PoliceMichigan State PoliceMichigan State Police
Emmett Township Department of Public Safety
The Emmett Township Department of Public Safety received $40,000 from the Bureau of Justice Assistance to purchase 20 body-worn cameras through the 2022 Small, Rural, Tribal BWC Microgrant program.
Sources (via the EFF Atlas): Small, Rural, and Tribal Body-Worn Camera microgrant grantee list
Source: EFF Atlas of Surveillance (Electronic Frontier Foundation & University of Nevada, Reno — Reynolds School of Journalism) · CC BY 4.0 · retrieved July 2026