Flock Safety, the police technology company most notable for their extensive network of automated license plate readers spread throughout the United States, is rolling out a new and troubling product that may create headaches for the cities that adopt it: detection of “human distress” via audio. As part of their suite of technologies, Flock has been pushing Raven, their version of acoustic gunshot detection. These devices capture sounds in public places and use machine learning to try to identify gunshots and then alert police—but EFF has long warned that they are also high powered microphones parked above densely-populated city streets.

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In marketing materials, Flock has been touting new features to their Raven product—including the ability of the device to alert police based on sounds, including “distress.” The online ad for the product, which allows cities to apply for early access to the technology, shows the image of police getting an alert for “screaming.” (Since the publication of this blog post, Flock has quietly amended the ad on this webpage to say "distress" instead of "screaming)