https://motherboard.vice.com/en_us/article/3k4dq5/amazon-rekognition-facial-recognition-cops-body-cameras

Amazon has sold cheap facial-recognition software to law enforcement agencies in at least two states and has also sold it to a police body camera manufacturer and a company that does intelligence and data analysis for law enforcement, according to internal documents at those police departments and Amazon’s own marketing materials.

The software, created by Amazon Web Services, is called “Amazon Rekognition” and promises to “perform real-time recognition of persons of interest from camera live streams against your private database of face metadata,” according to the company’s marketing materials. The software uses image recognition algorithms to track and identify objects in people when tested against an existing database of videos or photos.