I'm in my first year at university what are ciprofloxacin 250mg tablets used for The ACLU notes that police departments and states have vastly different regulations on the use of license plate scanners. Of the jurisdictions that responded to ACLU information requests, Yonkers, N.Y., indicated it keeps the records indefinitely, while New Jersey keeps them for five years. Several cities - including Boston, Mass., and Raleigh, N.C. - require destruction of the records in less than one year.