Guangdong provincial affairs small program sweep code into the field has become a trip card is the design of the small program. Communication big data trip card, commonly known as "trip code". The China Academy of Information and Communications Technology, China Telecom, China Mobile, China Unicom three basic telecommunications enterprises using cell phone "signaling data", through the user's cell phone is located in the location of the base station to obtain, for the country's 1.6 billion cell phone users free of charge to provide query services, cell phone users can be through the service, query the first 14 days of my visit to all the cities and municipalities of the information. Guangdong provincial affairs small program scanning code will appear trip card.