In order to prevent the cross infection of new coronaviruses, many people need to wear masks when going out, and they may also carry backpacks or luggage in their hands. Some people will wear glasses, and only the forehead will be exposed to the outside world. , Hotels, shopping malls, cinemas, office buildings, schools, enterprises, scenic spots and other public places with large flow of people, it is strongly recommended to use the automatic infrared body temperature screening instrument to automatically detect the highest temperature of the human face for the screening of fever people.