"The basic idea is that airports could be fitted with a network of combined panoramic cameras and RFID (radio frequency ID) tag readers, which would monitor the movements of people around the various terminal buildings."
The plan, he said, would be for each passenger to be issued with a tag at check-in.
He said: "In our system, the location can be detected to an accuracy of 1m, and video and tag data could be merged to give a powerful surveillance capability."
