Businesses and neighbourhoods were by their structure accessible in complete anonymity. Anybody can drive on a street, anybody can go into a store. The next customer in McDonalds might be a local resident who's hungry, or it might be a psychotic person with a machine gun he bought in the local sporting good store. HoloWorld has a different structure in that most transactions happen between people who already know each other. The impersonal anonymity is largely gone.
People are free to move about as they choose.
However, each community is likely to monitor and govern who they let into their midst, so there is no general freedom to roam around within communties where one isn't welcome. HoloWorld overall has no central register of everybody. There is no central authority that tries to monitor and control everybody. However, local communties might keep very thorough registers of both their members and visitors to the community. They are also likely to be structured geographically and architecturally to facilitate this.