The trip code asterisk was lifted on June 29, 2022. According to the news of the Ministry of Industry and Information Technology, in order to resolutely implement the Party Central Committee and the State Council on the external prevention of input, the internal prevention of rebound of the general strategy and the general policy of dynamic clearance, to support the efficient coordination of epidemic prevention and control and economic and social development, to facilitate the majority of users to travel, from June 29, 2022 onwards to cancel the asterisk marking of the communication itinerary card.

The trip code is the communication big data trip card, is the ICT Academy joint telecommunications, mobile, Unicom, the use of communication big data for cell phone users to provide free query services.