From the Center for Democracy and Technology (CDT), a 15 page report (pdf), Anonymization May Protect Privacy As Government Seeks Data, that states:
“The same technology that permits the accumulation, sharing, and analysis of huge databases also allows for the incorporation into information sharing systems of features that protect information from abuse or misuse. In this paper, we focus on three technologies that hold great promise: anonymization of data, permissioning rules built into the data and search engines to regulate access, and immutable audit trails that can identify abuse (while also assisting in linking people into ad hoc collaborative teams).”
