Does the subject want to ask, "What are the precautions for scanning local area codes in other places?" Actively cooperate with temperature measurement and code measurement, and participate in nucleic acid screening and sampling in an orderly manner. The site is outside the local area, and the precautions for on-site scanning of local codes are to actively cooperate with temperature measurement and code inspection, and participate in nucleic acid screening and sampling in an orderly manner. The place code is the only two-dimensional code used by people entering key places, and it is an independent identification code generated by the platform for key places. By scanning the place code, all people who enter and leave the place can automatically register their information.