British scientists claim that they have found a way to replace the Global Positioning System (GPS) without the need for any space technology. Studies have found that lasers can confine and cool atoms placed under vacuum, reducing the temperature to above absolute zero One millionth of a degree. At such temperatures, atoms are extremely sensitive to changes in the magnetic and gravitational fields of the earth. Researchers can use these results to limit atoms on a small device, study their fluctuations, and locate their And accurately locate where they are. At this time, the tracking of the track will be done by a device that is only 1 meter long. The key is how to turn it into a miniature device so that it can be installed on a smartphone. in. What does this text mainly introduce? ['Innovation of smartphone applications.', 'New uses of lasers in technological innovation.', 'Application of new positioning system in frontier fields.', 'The principle of using atoms to locate.']