Flock police cameras scan billions per month, sparking protests

Flock contracts with more than 5,000 law enforcement agencies across the U.S. and scans over 20 billion license plates per month.

Sandy Boyce, a 72-year-old retiree in Sedona, Arizona, first saw the cameras around town this summer. They were black and sleek, mounted on tall poles under large solar panels and positioned at intersections to snap images of cars as they drove by.