A computer said it was 93 percent sure. It was wrong, and a guy ended up in jail anyway.

Security Boulevard's breakdown of facial recognition's track record in policing reads less like an edge case and more like a pattern.

Two Cases

  • Robert Dillon, a 52-year-old commercial crabber from Fort Myers, Florida, was arrested after Florida's FACES system returned a "93 percent match." He lived more than 300 miles from the scene and had never been there.

  • Porcha Woodruff was eight months pregnant, getting her kids ready for school, when Detroit police arrested her for carjacking and robbery based partly on a facial-recognition lead. Charges were later dismissed.

It's Not Evenly Distributed, Either

NIST's 2019 demographic-effects report found some facial-recognition algorithms had false-positive rates for Asian and African American faces 10 to 100 times higher than for Caucasian faces.

The Real Pattern

The pattern the piece identifies: departments increasingly treat an algorithm's confidence score as a shortcut to probable cause, rather than as one unverified lead among many. When the match is wrong, the accountability gets diffused -- "the computer picked him," as the piece puts it, isn't supposed to be a defense.

If your local police department uses facial recognition, this is worth knowing: exactly how it's being used, and what independent verification (if any) happens before someone gets arrested on the strength of a percentage.