The ACLU report cited how the Minneapolis Star Tribune in 2012 tracked the movement of the Mayor R.T. Rybak 's car 41 times at a license police reader in the prior year . Union says technology helps to keep officers and the public safe . Police around country track every vehicle passing a license plate reader . The readers are surveillance technology using high speed cameras . They can read plates in seconds, but they also have microphones that pick up conversations between people who pass by on their way home from work or school.
Union says technology helps to keep officers and the public safe . Police around country track every vehicle passing a license plate reader . The readers are surveillance technology using high speed cameras . They can read plates in seconds, but they also have microphones that pick up conversations between people who pass by on their way home from work or school.