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500k facial scans at UK stations yield no arrests, 1 false positive

518 points · 305 comments · ilamont

  1. blitzar · · focus · HN ↗
    16 deployments for 6 months at rail stations - they must have been off 99% of the time to only scan 500k faces.

    For scale 500k people is 2 days of Liverpool Street Stations daily average

    1. LastTrain · · focus · HN ↗
      OK, so turn them on 100%, scale (your numbers here) the results out to 50 million faces. Now you have still caught 0 criminals and you have 500 false positives.
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