Citizens can search for "Good Pass Code" through WeChat, and they need to enter their personal information such as name, ID number and mobile phone for the first time to pass real-name authentication. After real-name authentication, you can scan the QR code of the corresponding place through the "Sweep" function at the bottom of the "Good Pass Code" page. The "Travel Code" function on the "Good Pass Code" directly connects the communication travel card, which is convenient for those who have not verified the travel to directly verify the travel card. Need to be reminded that if "the itinerary has not been verified" is displayed after scanning the "QR code of the place", it means that the citizens' own Su Kang code has not been checked in the the State Council itinerary card. It is suggested that citizens should check their travel cards in Su Kang code once a day before going out. "Good Call Code" also integrates the function of "incoming call registration", which is convenient for those who have come back to call to report their travel situation.