Cara Esten Hurtle used drones to map and photograph Flock cameras.
"More than anything, what stood out to me about the process of photographing these devices was geography: they exist at the boundaries of rich neighborhoods like Piedmont to track who enters; they exist embedded into poor neighborhoods to track the people who live there. Place exposes their purpose."
@evacide Larkspur in Marin County, California, already had ALPR at its boundary for the same purpose in October 2015, long before Flock was founded. The city police would be alerted if a car from outside hadn't left by sunset, the implicit assumption being they would be burglars, not tourists.
The only difference is that Flock networks and aggregates this beyond the reach of a single city.