Reviving Purpose Limitation and Data Minimisation in Data-Driven Systems

This paper determines whether the two core data protection principles of data minimi- sation and purpose limitation can be meaningfully implemented in data-driven systems. While contemporary data processing practices appear to stand at odds with these prin- ciples, we demonstrate that systems could technically use much less data than they currently do. This observation is a starting point for our detailed techno-legal analysis uncovering obstacles that stand in the way of meaningful implementation and compliance as well as exemplifying unexpected trade-offs which emerge where data protection law is applied in practice. Our analysis seeks to inform debates about the impact of data protec- tion on the development of artificial intelligence in the European Union, offering practical action points for data controllers, regulators, and researchers.

Abstract licence: CC BY-NC-ND

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