It is applicable to the access verification of municipal government organs, enterprises and institutions, medical institutions, civil affairs service institutions, campuses, farmers' markets, shopping malls, supermarkets, restaurants, exhibitions, tourism, cultural entertainment, stadiums, hotels, docks, vehicles, parks, communities, communities and other places.

Institutions, enterprises, hospitals, schools, stations and docks, large supermarkets, farmers' markets and other crowded places encourage the use of professional code scanning equipment integrating Sheng Da codes to improve the efficiency of traffic verification.