{"id":"AIBD-1233","title":"Western Australia Police says that its five-month live facial recognition trial scanned 1,380,882 faces and led to 122 arrests, with nine incorrect alerts","summary":"Western Australia Police says that its five-month live facial recognition trial scanned 1,380,882 faces and led to 122 arrests. It also raised nine incorrect alerts.","date_observed":"2026-11-02","date_basis":"source publication","date_precision":"day","benefit_status":"reported","account":"Western Australia Police ran a live facial recognition trial with cameras in police vans for five months, until 31 October 2026. The technology was used in 100 deployments across 43 regional and metropolitan locations. The force says that it scanned 1,380,882 faces and that alerts led to 122 arrests. Alerts also led officers to engage with 146 registered sex offenders and to locate 10 people for welfare checks. A police spokesperson said that the system generated nine incorrect alerts, and the commissioner said that officers engaged with each person wrongly flagged. The force has withdrawn the vans from public deployment while it evaluates the trial. Civil liberties groups questioned how the figures were presented.","category":"aggregate result","unexpected":false,"purpose":"Western Australia Police tested live facial recognition to find wanted people in public places.","system":"Live facial recognition in police vans","model_version":null,"developer":null,"deployer":"Western Australia Police","location":"Western Australia, Australia","domain":"Policing","segment":null,"registry_ids":{},"ratings":[{"group":"organizational","depth":2,"reason":"The force reports 122 arrests from the trial's alerts, with nine incorrect alerts in 1,380,882 scans."},{"group":"societal","depth":null,"reason":"The sources give no measure of crime or safety for the public, and the arrests have not yet reached court outcomes."}],"ai_role":{"status":"unassessed","statement":"The force credits the alerts with the arrests but gives no comparison with policing without the system."},"evidence":[{"kind":"news report","citation":"ID Tech, 2 November 2026.","title":"WA Police Face Recognition Trial Ends After 1.38 Million Scans and 122 Arrests","url":"https://idtechwire.com/wa-police-face-recognition-trial-ends-after-1-38-million-scans-and-122-arrests/","date":"2026-11-02","written_by":"deployer","quote":"Western Australia Police says its five-month live facial recognition trial scanned 1,380,882 faces and led to 122 arrests before it ended on Oct. 31."},{"kind":"news report","citation":"ID Tech, 2 November 2026. On the incorrect alerts.","title":"WA Police Face Recognition Trial Ends After 1.38 Million Scans and 122 Arrests","url":"https://idtechwire.com/wa-police-face-recognition-trial-ends-after-1-38-million-scans-and-122-arrests/","date":"2026-11-02","written_by":"deployer","quote":"A police spokesperson said the system generated nine incorrect alerts across the 1.38 million scans, which the force described as an error rate of 0.00065 percent.","supports_benefit":false},{"kind":"news report","citation":"Diario del Sur, 2 November 2026.","title":"Australia escaneó 1,38 millones de rostros y reportó 122 detenciones","url":"https://www.diariodelsur.com.co/noticias/australia-escaneo-1-38-millones-de-rostros-y-reporto-122-detenciones","date":"2026-11-02","written_by":"deployer","quote":"La Policía de Australia Occidental presentó los resultados de un programa piloto de reconocimiento facial en tiempo real que permitió escanear 1.380.882 rostros y registrar 122 detenciones durante cinco meses de funcionamiento.","quote_translation":"Western Australia Police presented the results of a real-time facial recognition pilot program that scanned 1,380,882 faces and recorded 122 arrests over five months of operation."}],"replication":{"produced_by":["Cameras in police vans that compare passing faces with a watch list","Officers who check each alert before they act"],"must_hold":["The watch list must be accurate and lawful","Officers must check each alert, since the system raised incorrect ones"],"echoes":[]},"paired_incident":null,"headline":"WA Police *live facial recognition* trial leads to 122 arrests","metric":"122 arrests","comparator":null,"later":{"status":"unknown","date":null,"note":"The benefit was first reported on 2 November 2026, and no later report was found.","quote":null,"url":null},"learns_from_data":{"value":"not shown","note":"The reports describe face matching but not how the system was built.","quote":null,"url":null},"benefit_categories":["physical_health"],"scsp_example":"Crime reduction or prevention","size":{"reach":{"band":null,"fact":null,"quote":null,"url":null,"reason":"The sources count arrests and alerts, not the people who gained from them."},"duration":{"band":3,"fact":"The trial ran for five months.","quote":"Western Australia Police says its five-month live facial recognition trial scanned 1,380,882 faces and led to 122 arrests before it ended on Oct. 31.","url":"https://idtechwire.com/wa-police-face-recognition-trial-ends-after-1-38-million-scans-and-122-arrests/","reason":null},"distribution":{"band":null,"fact":null,"quote":null,"url":null,"reason":"The sources compare no groups."},"frequency":{"band":4,"fact":"The force deployed the vans 100 times over about 19 weeks.","quote":"The technology was used in 100 deployments across 43 regional and metropolitan locations.","url":"https://idtechwire.com/wa-police-face-recognition-trial-ends-after-1-38-million-scans-and-122-arrests/","reason":null}},"value":null,"developer_country":null,"deployer_country":"Australia","unrated_because":null,"brief_notes":null,"brief":null,"confidence":"claimed","shade":"low","claim_status":"The deployer's account","claim_basis":"Sources: two news reports from the deployer. For the benefit itself, the cited sources include no independent source and no finding by an external body.","case_jurisdictions":["Australia"],"design":"no comparison","certainty":"very low","certainty_reasons":["Starts very low because no comparison was measured."],"profile":{"case_id":"AIBD-1233","source_ids":["AIBD-1233-source-0001","AIBD-1233-source-0002","AIBD-1233-source-0003"],"families":{"strategic assessments":{"state":"unresolved","record_ids":[]},"evaluations":{"state":"unresolved","record_ids":[]},"monetary observations":{"state":"unresolved","record_ids":[]},"institutional decisions":{"state":"unresolved","record_ids":[]}},"fields":{"actors[]":{"state":"value_present","value":{"kind":"record_fields","fields":{"deployer":"Western Australia Police"}}},"actors[].ownership_control":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"ai_contribution":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"ai_relationship":{"state":"value_present","value":{"kind":"record_fields","fields":{"category":"aggregate result","ai_role":{"status":"unassessed","statement":"The force credits the alerts with the arrests but gives no comparison with policing without the system."}}}},"assessments[].alternatives":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"assessments[].assessor_date":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"assessments[].depth":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"organizational","depth":2,"reason":"The force reports 122 arrests from the trial's alerts, with nine incorrect alerts in 1,380,882 scans."},{"group":"societal","reason":"The sources give no measure of crime or safety for the public, and the arrests have not yet reached court outcomes."}]}}},"assessments[].display_confidence":{"state":"value_present","value":{"kind":"structured","data":{"confidence":"low","evidence_word":"claimed","claim_status":"The deployer's account","basis":"Sources: two news reports from the deployer. 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For the benefit itself, the cited sources include no independent source and no finding by an external body.","inferred":false},"source_refs":["AIBD-1233-source-0001","AIBD-1233-source-0002","AIBD-1233-source-0003"]},"claims[].missingness":{"state":"value_present","value":{"kind":"text","text":"The force had not yet published its evaluation of the trial. The figures are its own, and none compares policing with and without the system."},"display":{"answer":"The force had not yet published its evaluation of the trial. 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The technology was used in 100 deployments across 43 regional and metropolitan locations. The force says that it scanned 1,380,882 faces and that alerts led to 122 arrests. Alerts also led officers to engage with 146 registered sex offenders and to locate 10 people for welfare checks. A police spokesperson said that the system generated nine incorrect alerts, and the commissioner said that officers engaged with each person wrongly flagged. The force has withdrawn the vans from public deployment while it evaluates the trial. Civil liberties groups questioned how the figures were presented."}}},"outcomes[].distribution":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"outcomes[].duration":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"outcomes[].id":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"outcomes[].stakeholder_group":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"organizational","depth":2,"reason":"The force reports 122 arrests from the trial's alerts, with nine incorrect alerts in 1,380,882 scans."},{"group":"societal","reason":"The sources give no measure of crime or safety for the public, and the arrests have not yet reached court outcomes."}]}}},"outcomes[].status":{"state":"value_present","value":{"kind":"record_fields","fields":{"benefit_status":"reported"}}},"outcomes[].tradeoffs":{"state":"value_present","value":{"kind":"text","text":"The system raised nine incorrect alerts in 1,380,882 scans, and officers engaged with each person wrongly flagged."},"display":{"answer":"The system raised nine incorrect alerts in 1,380,882 scans, and officers engaged with each person wrongly flagged.","inferred":false},"source_refs":["AIBD-1233-source-0001"]},"outcomes[].unexpected":{"state":"value_present","value":{"kind":"record_fields","fields":{"unexpected":false,"purpose":"Western Australia Police tested live facial recognition to find wanted people in public places."}}},"places[]":{"state":"value_present","value":{"kind":"record_fields","fields":{"location":"Western Australia, Australia","deployer_country":"Australia"}}},"purpose":{"state":"value_present","value":{"kind":"record_fields","fields":{"purpose":"Western Australia Police tested live facial recognition to find wanted people in public places."}}},"record_dates":{"state":"value_present","value":{"kind":"record_fields","fields":{"date_observed":"2026-11-02","date_basis":"source publication","date_precision":"day"}}},"replication.attempts[]":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"replication.conditions":{"state":"value_present","value":{"kind":"record_fields","fields":{"replication":{"produced_by":["Cameras in police vans that compare passing faces with a watch list","Officers who check each alert before they act"],"must_hold":["The watch list must be accurate and lawful","Officers must check each alert, since the system raised incorrect ones"],"echoes":[]}}}},"sector":{"state":"value_present","value":{"kind":"record_fields","fields":{"domain":"Policing"}}},"sources[].access_version":{"state":"unresolved","reason":"This is an explicit unresolved assignment: the sources on record do not settle this question."},"sources[].citation_locator":{"state":"value_present","value":{"kind":"record_fields","fields":{"evidence":[{"kind":"news report","citation":"ID Tech, 2 November 2026.","title":"WA Police Face Recognition Trial Ends After 1.38 Million Scans and 122 Arrests","url":"https://idtechwire.com/wa-police-face-recognition-trial-ends-after-1-38-million-scans-and-122-arrests/","date":"2026-11-02","written_by":"deployer","quote":"Western Australia Police says its five-month live facial recognition trial scanned 1,380,882 faces and led to 122 arrests before it ended on Oct. 31."},{"kind":"news report","citation":"ID Tech, 2 November 2026. 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