Health codes are based on actual data and can be generated by citizens or people who have returned to work through online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.
Travel code:
China Institute of Information and Communication, together with China Telecom, China Mobile and China Unicom, obtained the data received by mobile phones through the location of their base stations, and provided free inquiry service for 654.38+06 billion mobile phone users nationwide. Through this service, mobile phone users can query all the city information they have been to in the previous 654.38+04 days.
Precautions for using trip codes:
The communication big data travel card analyzes the signaling data of the mobile phone, and obtains the travel record through the location of the base station where the user's mobile phone is located, so as to accurately locate the track it has traveled. The collection, transmission and processing of signaling data are automated, with strict security and privacy protection mechanisms, and the query results are available in real time, which is convenient and fast.
The data of the communication big data travel card can be used nationwide, achieving full coverage of a national network, and can also query the international travel of my domestic mobile phone number. On the premise of ensuring user information security, these will provide scientific and accurate technical support for epidemic prevention and control, resumption of work and production, road traffic, entry and exit, etc.