US to slap tourists with RFID

The US Department of Homeland Security has decided to trial RFID tags in an effort to make sure only the right sort of people get across US borders.
The controversial US-VISIT scheme for those visiting the US from abroad already fingerprints holidaymakers on their way into the country and is now adding RFID to the mix in order to improve border management, the department said.
...RFID chips will be used to track both pedestrians and vehicles entering the US to automatically record when the visitors arrive and leave in the country.