From American Civil Liberties Union:
Today we sued the federal government to enforce Freedom of Information Act requests we filed over the summer to learn about how it is using a technology that can track Americans’ location with increasing efficacy: automated license plate readers. (See today’s legal complaint, our original FOIA requests, and a blog we posted when we made those requests.)
We know enough about the rapid expansion of this technology to be very concerned about it, but there’s a lot we don’t know.That is why ACLU affiliates from 38 states and Washington, D.C. filed records requests in July 2012 with their state and local police departments to find out how they are collecting, sharing, and storing our location data using these systems.