In just 20 minutes this morning, an automated license-plate-recognition (ALPR) system in Nashville, Tennessee, captured photographs and detailed information from nearly 1,000 vehicles as they passed by. Among them: eight black Jeep Wranglers, six Honda Accords, an ambulance, and a yellow Ford Fiesta with a vanity plate.This trove of real-time vehicle data, collected by one of Motorola’s ALPR systems, is meant to be accessible by law enforcement. However, a flaw discovered by a security researche...