https://www.vice.com/en_us/article/qvg4vx/new-map-reveals-that-at-least-231-cities-have-partnered-with-ring

At least 231 police departments around the country have partnered with Amazon’s home security company Ring, according to the most comprehensive map of the company’s partnerships to date. The map was created by Shreyas Gandlur, an incoming senior electrical engineering student at the University of Illinois. Each node is annotated with a link to a blog or social media post announcing a Ring partnership in a particular city.

The map, which was published on Gandlur’s blog, shows the extensive degree to which Ring has partnered with local law enforcement. Per these partnerships, police get access to Ring’s “Law Enforcement Neighborhoods Portal,” an interactive map that shows the approximate location of all Ring devices in a given area. Police can use the portal to post on Neighbors, Ring’s digital “neighborhood watch” app, and request Ring camera footage directly from camera-owners. In exchange, police are required to promote Ring products, either explicitly or implicitly.