When foreigners come to the corridor or locals go out to return to the corridor, they can use the "health code" to realize one-code communication, and there is no need to issue relevant certification materials separately.
The "health pass code" has two main purposes: one is to apply for my health pass code through the "show code" function and provide personal health certificate for epidemic prevention; The other is to scan the health pass code through the "scan code" function to obtain other people's epidemic prevention health information as a verification tool for the health certificate of the code holder.