I want to create an android app, which uses firebase as datastore and has users and groups of users. Each group has a list with the containing users unique user-id.
Is it a good idea to share the user-id to all group-members, if i use anonymous authentication? I mean, is the user-id the only credential, a device with anonymous anthentication logs in with to the firebase? If that would be so, some other could login with another user id.