The health code is one yard for each person, so you can't put it with your family. If you want to be convenient, edit it on your mobile phone, print it out and carry it in plastic packaging.
To help your family find the health code, you have to have your own mobile phone, and then use it to register the health code and punch in.
It is best to bind face recognition, real-name authentication and bank cards to family members. After binding, there will naturally be a health channel, which is the column of city service.