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Data Unlinkability

Definition

Data unlinkability describes the property where two or more items of data cannot be associated with each other by an external observer. This characteristic ensures that even if individual data points are known, their connection to a specific entity or other related data remains obscured. It is a critical aspect of privacy-preserving technologies, preventing the reconstruction of user profiles or activity patterns from fragmented information. Achieving unlinkability often involves cryptographic techniques or protocol designs that break deterministic links between data elements.