k-Unlinkability: A privacy protection model for distributed data
Data & Knowledge Engineering
Secure construction of k-unlinkable patient records from distributed providers
Artificial Intelligence in Medicine
The effects of location access behavior on re-identification risk in a distributed environment
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
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An individual's location-visit pattern, or trail, can be leveraged to link sensitive data back to identity. We propose a secure multiparty computation protocol that enables locations to provably prevent such linkages. The protocol incorporates a controllable parameter specifying the minimum number of identities a sensitive piece of data must be linkable to via its trail.