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Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

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51–60 of 114 posts

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#51

Some commenters here mentioned they may have setup the test incorrectly and that may be, but I think the problem this highlights most is that technology used improperly, especially by law enforcement can have major ramifications and consequences. Is the contractor that makes software for your local department going to follow best practices and have the algorithm audited by experts? Will they release the code? Those a…

I think a fun thought exercise is finding the fine line between tech and guns/alcohol/cars. You cannot sue a gun/car/alcohol manufacturer if their product is used to injure someone because it functioned as designed but was used maliciously. How does that legal precedent work when extrapolated to tech and something like facial recognition? If it worked exactly as designed and we know it has a margin of error (or can b…

> could Amazon or a tech administering it be liable for someone falsely imprisoned?

I would wager "absolutely not" for the exact same issue as firearms or cars. The person who mis-applied the technology or a middle man vendor though? Unless they fall under qualified immunity, there's your fall guy.

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#53
There are definitely concerns about false positives, but it has to be compared to the current system. Are the results, effectiveness, better?

When the gov steers opinion, we call it manufactured consent, when public advocacy organizations engage in sloppy methodology to further a cause, I propose calling it manufactured outrage.

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#54
I work in the industry and obviously I can't say for certain, but I don't think Amazon has anywhere near the most accurate face recognition software available. If you want to see where the tech is in terms of performance, the various NIST tests are highly informative.

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#57

Earlier quoted context omitted.

> but Amazon says it recommends at least a 95 percent threshold for law enforcement applications where a false ID might have more significant consequences. That's not in https://aws.amazon.com/rekognition/faqs/ - while that threshold may minimize false positives, I'm curious if it was in any documentation that the ACLU saw. Or, to the bigger point, is it in any public documentation?

I would be shocked if LE started using this tech, imprisoned a bunch of people, and used the excuse "Well, we followed the FAQS." I would imagine they would work very closely with Amazon and run a ton of calibration. For the ACLU to say that we used the default settings and it doesn't work correctly is disingenuous.

You are going to be very very shocked my friend!

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#58

Things I want to know: - Show us the side-by-side images of the false-positives. Are the matches plausible? - What is the demographic distribution of the mugshot database? If the data is disproportionately biased, then that bias would be reflected in the false-positives. A casual skimming of some mughot websites shows a potentially significant racial bias.

Whether the matches are plausible is completely besides the point. This isn't an evaluation of Amazon's recognition quality, it's a demonstration that the system is fallible and notes on the consequences.

Same thing re data setup. Not the point again. Even if law enforcement hires the world's best computer vision experts (fat chance, it'll go to cheapest contractor) this is a note that there can be mistakes that get people killed.

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#59
post #58

Things I want to know: - Show us the side-by-side images of the false-positives. Are the matches plausible? - What is the demographic distribution of the mugshot database? If the data is disproportionately biased, then that bias would be reflected in the false-positives. A casual skimming of some mughot websites shows a potentially significant racial bias.

Whether the matches are plausible is completely besides the point. This isn't an evaluation of Amazon's recognition quality, it's a demonstration that the system is fallible and notes on the consequences. Same thing re data setup. Not the point again. Even if law enforcement hires the world's best computer vision experts (fat chance, it'll go to cheapest contractor) this is a note that there can be mistakes that get…

What are the consequences?? How is this any different than the suspect sketches? This is a far worse situation and still quite minor https://www.cbc.ca/news/canada/british-columbia/bc-mother-ch...

Re: Amazon’s Face Recognition Falsely Matched 28 Members of Congress with Mugshots

#60

https://www.theverge.com/2018/7/26/17615634/amazon-rekogniti... >Reached by The Verge, an Amazon spokesperson attributed the results to poor calibration. The ACLU’s tests were performed using Rekognition’s default confidence threshold of 80 percent — but Amazon says it recommends at least a 95 percent threshold for law enforcement applications where a false ID might have more significant consequences. Presented witho…

> but Amazon says it recommends at least a 95 percent threshold for law enforcement applications where a false ID might have more significant consequences. That's not in https://aws.amazon.com/rekognition/faqs/ - while that threshold may minimize false positives, I'm curious if it was in any documentation that the ACLU saw. Or, to the bigger point, is it in any public documentation?

Threshold is a configuration property no different than a dynamo read capacity. Misconfigured properties don’t work the way you expect. I don’t see how documentation can be expected to give black and white guidance to what this threshold should be set to without having more understanding of your use case.
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