WA Police Trial Live Facial Recognition in Public
Western Australia Police scanned more than 130,000 faces during the first week of an Australian-first live facial recognition trial in Perth and Fremantle, ABC News reports. The system compared passersby with a police watchlist of about 4,000 people and generated 33 alerts; reports differ on whether the trial resulted in 18 or 19 arrests. Privacy regulators and advocates have raised concerns about consultation, watchlist transparency and discriminatory effects.
Western Australia Police have scanned more than 130,000 faces during the first week of a live facial recognition trial in Perth and Fremantle, ABC News reports. The mobile deployment is described as the first Australian police use of facial recognition on live public video feeds, rather than analysis of footage after an incident.
The trial uses cameras mounted on a marked police van to compare passing faces in real time with a police watchlist. According to ABC News, the list contains about 4,000 people, including people accused of serious offences, missing people, and people police assess as potentially at risk of harming themselves or others.
WA Police reported 33 alerts in the opening week. ABC News reported 18 arrests, while Biometric Update reported 19 arrests and two incorrect alerts. The differing arrest totals are material because they affect assessment of the system's operational results; the retrieved reports do not explain the discrepancy.
How the trial operates
ABC News reported that WA Police is using NEC's NeoFace m40 product. WA Police's official trial page says the cameras are deployed overtly near a marked police van, officers assess any generated alert before engaging a person, and non-matched data is deleted automatically and immediately.
Biometric Update reported that the five-month pilot will be evaluated before decisions on future use, and that the trial plan does not commit police to permanent cameras, covert deployment, or integration with wider CCTV systems.
The distinction between live one-to-many matching and conventional CCTV matters technically and legally. Conventional cameras may record a scene for later review, whereas live facial recognition creates biometric templates from many people in a public area and searches for potential matches against a defined database in near real time. Human confirmation can reduce the risk that an automated alert alone triggers action, but it does not remove the privacy implications of processing faces of people who are not suspects.
Privacy and bias concerns
The Office of the Information Commissioner WA said it was aware of the trial but was not invited to a formal consultation process or asked to contribute to its design, according to Biometric Update. The watchdog cautioned against collective privacy harms.
ABC News reported criticism from privacy experts, legal advocates and Aboriginal advocates, including questions about the opacity of the watchlist and whether deployment locations could disproportionately affect First Nations people. The Guardian reported that critics have also raised concerns about false alerts, algorithmic bias and function creep, the expansion of a system beyond its initial purpose.
University of Western Australia law lecturer Anna Zenz told IDTechWire that facial recognition datasets can embed racial and gender biases and warned that errors can produce discriminatory outcomes. The retrieved sources do not provide demographic accuracy results for the specific NEC deployment in Western Australia.
For ML and data-governance practitioners, this case illustrates a recurring evaluation gap in public-sector biometric systems: aggregate outcomes such as arrests and alerts do not by themselves establish performance across demographic groups, lighting conditions, camera angles, or watchlist quality. A rigorous assessment would benefit from documented false-positive and false-negative rates, subgroup testing, retention controls, audit logs, and independent oversight before the privacy and accuracy tradeoffs can be assessed fully.
The trial is being watched by other Australian law-enforcement agencies, ABC News reported. Its eventual assessment could add evidence to an Australian policy debate already shaped by the Privacy Commissioner's finding that Bunnings' earlier facial-recognition use interfered with customer privacy.
Key Points
- 1WA Police's live trial processed more than 130,000 public faces in one week, bringing one-to-many biometric matching into Australian policing.
- 2Reported arrests and alerts show operational use, but conflicting arrest totals and two incorrect alerts limit straightforward performance conclusions.
- 3A rigorous evaluation would benefit from subgroup accuracy reporting, retention controls and independent oversight to assess privacy and discrimination risks.
Scoring Rationale
This is a notable Australian deployment of live, one-to-many facial recognition in public spaces, with direct relevance to biometric evaluation, privacy engineering and AI governance. It is a regional trial rather than a broadly deployed platform or a new technical breakthrough, but its policy precedent and scale make it important to practitioners working on high-risk AI systems.
Sources
Primary source and supporting public references used for this report.
View 4 more sources
- Privacy concerns raised over Australian-first live AI police face scanning trialabc.net.au
- WA police facial recognition trial launches with a real-time arrest and privacy backlashtheguardian.com
- Western Australia's LFR trial draws criticism over privacy risks and limited consultationbiometricupdate.com
- Western Australia Police to Trial Live Facial Recognition in an Australian Firstidtechwire.com
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