Why did the country cancel the health code trip code nucleic acid detection?

The national cancellation of health code trip code nucleic acid detection is the reduction of epidemic situation. If the infectivity of the epidemic is greatly reduced and the social impact is slight, the country will start to cancel the nucleic acid detection of health code travel code. Communication big data travel card, commonly known as travel code, is made by Information China Information and Communication Research Institute in cooperation with China Telecom, China Mobile and China Unicom to obtain the location of the base station where the user's mobile phone is located by using the "signaling data" of the mobile phone. Provide free inquiry service for 654.38+06 billion mobile phone users nationwide, and it will be launched on March 6, 2020.