Functional anonymisation: Personal data and the data environment

This paper proposes an alternative formulation called functional anonymisation that focuses on the relationship between the data and the environment within which the data exists (the data environment). We provide a formulation for describing the relationship between the data and its environment that links the legal notion of personal data with the statistical notion of disclosure control. Anonymisation, properly conceived and effectively conducted, can be a critical part of the toolkit of the privacy-respecting data controller and the wider remit of providing accurate and usable data.