What is the function of Hangzhou health code?

Hangzhou health code is a digital pass measure to facilitate the normal activities of groups such as rework and rework according to the requirements of the Zhejiang Provincial Epidemic Prevention and Control Responsibility Order (No.2) and the Hangzhou Epidemic Prevention and Control Command Order (No.34) of the General Office of the provincial government, aiming at the current situation of "three returns" and the need for classified control of key places and key areas.