Brit License Plates Get Chipped

The British government is preparing to test new high-tech license plates containing microchips capable of transmitting unique vehicle identification numbers and other data to readers more than 300 feet away.

Officials in the United States say they'll be closely watching the British trial as they contemplate initiating their own tests of the plates, which incorporate radio frequency identification, or RFID, tags to make vehicles electronically trackable. "We definitely have an interest in testing an RFID-tagged license plate," said Jerry Dike, chairman of the American Association of Motor Vehicle Administrators and director of the Vehicle Titles and Registration Division of the Texas Department of Transportation.

So-called "active" RFID tags, like the one in the e-Plate made by the U.K. firm Hills Numberplates, have built-in batteries, allowing them to broadcast data much farther than the small passive tags used to track inventory at retail stores.

Active RFID is already enjoying limited use on U.S. roadways. Under a new program, the U.S. Department of Homeland Security is issuing RFID tags to foreign freight and passenger vehicles as they enter the country.