Cops Must Swear Silence to Access Vehicle Tracking System

Vigilant Solutions, founded in 2009, claims to have the nation’s largest repository of license-plate images with nearly 2 billion records stored in its National Vehicle Location Service (NVLS). Despite the enormous implications of the database for the public, any law enforcement agency that signs up for the service is sworn to a vow of silence by the company’s terms of service.

.. Vigilant is clear about the reason for the secrecy: it’s to prevent customers from “cooperating” with media and calling attention to its database.

.. The Harris prohibition has resulted in law enforcement agencies using the stingrays without obtaining a court warrant, because the agencies have interpreted the contract to mean they cannot even tell a judge about their intent to use the devices.