Privacy laws now.
I'm frequent surprised by how many people think that privacy laws block the police from recording their activities in public. For whatever reason, Flock is getting a lot of press, but this is hardly a new field.
> However, ANPR did not become widely used until new developments in cheaper and easier to use software were pioneered during the 1990s. The collection of ANPR data for future use (i.e., in solving then-unidentified crimes) was documented in the early 2000s.
- Benito Mussolini