RFID Chips Track License Plates

"The e-Plate, developed by the British firm Hills Numberplates, is a license plate that also transmits a vehicle's unique identification via encryption that can be read by a small detector, whose output can be used locally or communicated to a distant host. A single RFID reader can identify dozens of vehicles fitted with e-plates moving at any speed at a distance of about 100 yards. The e-plate looks just like a standard plate, but it contains an embedded chip that cannot be seen or removed. It is self-powered with a battery life of up to 10 years." Source: physorg.com