Experts voiced concern that using sketches would increase error rates, which could lead to false matches.
Deputies are allowed to run black and white sketches through Amazon's software, Rekognition, in the hope that the artist's impression of the suspect finds a match.
It's unclear how effective this method is, but Washington County police told the Post's Drew Harwell that in one test case, using a sketch had identified a man they'd already flagged as a suspect. AI experts told the Post that using a sketch could increase the likelihood of a false match, a sentiment which was echoed by Privacy International's Frederike Kaltheuner when contacted by Business Insider.
"This adds another layer of complexity that will likely increase error rates," said Kaltheuner, who heads up the organization's programme on corporate exploitation. Amazon told the Post that using sketches doesn't contravene its rules, but said that it would expect police to"pay close attention to the confidence of any matches produced this way." Confidence is the percentage rating Rekognition gives any match it makes, andThe Post found, however, that deputies weren't even shown this rating when using Rekognition, but were shown five possible matches for each search, irrespective of the system's confidence in its match.
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