In the ACLU's posts, they say that they used the "default match settings". In their response [0] to Amazon's response, the ACLU links to a guide published by Amazon [1] intended to "Identify Persons of Interest for Law Enforcement" that does use `searchFaceRequest?.faceMatchThreshold = 0.85;` (this is still the case today).
Fast Company [2] writes about this as well: "The ACLU in both tests used an 80% match confidence threshold, which is Amazon’s default setting, but Amazon says it encourages law enforcement to use a 99% threshold for spotting a match." That bit of the article links to the CompareFaces API documentation [3] which (still) states "By default, only faces with a similarity score of greater than or equal to 80% are returned in the response".
Fast Company [2] writes about this as well: "The ACLU in both tests used an 80% match confidence threshold, which is Amazon’s default setting, but Amazon says it encourages law enforcement to use a 99% threshold for spotting a match." That bit of the article links to the CompareFaces API documentation [3] which (still) states "By default, only faces with a similarity score of greater than or equal to 80% are returned in the response".
Have you seen/read something else about this?
[0] https://www.aclu.org/press-releases/aclu-comment-new-amazon-...
[1] https://aws.amazon.com/blogs/machine-learning/using-amazon-r...
[2] https://www.fastcompany.com/90389905/aclu-amazon-face-recogn...
[3] https://docs.aws.amazon.com/rekognition/latest/dg/API_Compar...