UK sets rules for live facial recognition in immigration enforcement

The UK Home Office published updated guidance for Immigration Enforcement's use of live facial recognition (LFR), covering watchlists, deployment locations, human oversight and biometric matching thresholds. Deployments must be overt, time-limited and proportionate, with a matching threshold of 0.64 and a false alert rate generally at or below 0.1%.

• Matching threshold for IE-led LFR deployments set at 0.64
• False alert rate should generally be 0.1% or lower, under 1 per 1,000 comparisons
• Deployments allowed beyond ports, including transport hubs and events
• Images of people who do not trigger an alert are deleted automatically and permanently