Police use facial recognition to scan one million faces in WA trial leading to 122 arrests
<p>Deployments of surveillance vans over five months result in nine false alerts and led officers to engage with 146 registered sex offenders</p><ul><li><p>Get our <a href="https://www.theguardian.com/email-newsletters?CMP=cvau_sfl">breaking news email</a>, <a href="https://app.adjust.com/w4u7jx3">free app</a> or <a href="https://www.theguardian.com/australi