From ACLU's blog:
It’s been over a year since 35 ACLU affiliates filed over 380 public records requests with state and local law enforcement agencies seeking information about their policies, procedures, and practices for tracking cell phones. And 13 months later (and in the wake of this frontpage article from the New York Times, we’re still handling responses.
We’ve posted the latest batch of documents received on our interactive webmap; (Highlights at the link.)