U.S. scientists tracking cell phone signals to find the laws of human movement U.S. researchers last six months, 100,000 mobile phone users, mobile phone signal to track the investigation and study, found that study habits under the domination of the movement trajectory is strikingly similar to arrive at the laws of human movement. In a research report published in a British magazine "Nature", the researchers pointed out that the discovery of this law is of great significance for urban planning, prevention of infectious diseases. Northeastern University in Boston, researchers conducted the tracking experiment. 100,000 anonymous mobile phone TV 6700users randomly selected from the six million mobile phone W818 Watch Phone users as the object of study, by the cell tower on their mobile phone signal, the date, time, coordinate, track, record each person's movement trajectory.