Russell Brandom reports:
On Monday, Washington state passed a new law requiring police to get a warrant before they use cell-site simulator tracking devices, known commonly as Stingrays. The devices have been widely deployed by law enforcement groups throughout the country but kept largely secret thanks to non-disclosure agreements and parallel construction techniques. The new Washington state law will be one of the most aggressive anti-tracking measures in the nation, although Virginia and Minnesota have adopted similar measures. It will also have an immediate effect on the Tacoma Police Department, which has been using a Stingray device in 2008.
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