Since the beginning of the epidemic prevention and control of the national implementation, now as long as the brush ID card, you can query each person's trip track, the trip code is a real-name registration and certification, and now everyone traveling is a real-name registration, travel by train, plane, including coach are to show the rider's ID card, the brush ID card verification and certification, so the brush ID card will certainly show your All the trip place.

Health code is mainly based on the ID card consumption information, cell phone positioning information, various scene scanning or actively fill in the trip, and then after the most important ETL and stream processing capabilities in big data technology, after thousands of servers of computational analysis, the synthesis of the real-time results.

If the phone is left at home and the person goes out of town, and swipes the ID card in the field, the cell phone track will show the field. Because the cell phone track in addition to the use of the cell phone track positioning after the use of real-name authentication synchronization positioning.

The trip card is not a function of Alipay, Alipay is just a small program entrance. Its working principle should be based on the cell phone signal access to the base station location positioning, and not through Alipay access to GPS, so theoretically it will not change.