Maybe I&#x27;m naive, but this doesn&#x27;t seem a very big deal in today&#x27;s world. So this would theoretically - if you have enough time and power to equip all intersections with hidden RFID readers mounted below the road - allow you to collect a sort of poor-man&#x27;s location history of cars. However, it&#x27;s restricted to the things that happen in the area you bugged, it doesn&#x27;t tell you anything about <i>who</i> is driving the car and if all routes are done by the same person and it captures nothing that takes place outside the car.<p>Compare that to the almost complete, 100% personalized location history you get when you manage to get your  &quot;flashlight&quot; app installed on an android phone...