The Logical Structure of Intentional Anonymity

Michał Barcz, Jarek Gryz, Adam Wierzbicki

About author

Michał Barcz
University of Warsaw
Institute of Philosophy
Krakowskie Przedmieście 3
PL-00-927 Warszawa


About author

Jarek Gryz
Department of Electrical Engineering and Computer Science
York University
2049 Lassonde Building
4700 Keele Street Toronto, Ontario, Canada, M3J 1P3


About author

Adam Wierzbicki
University of Warsaw
Institute of Philosophy
Krakowskie Przedmieście 3
PL-00-927 Warszawa



It has been noticed by several authors that the colloquial understanding of anonymity as mere unknownness is insuffi cient. This common sense notion of anonymity does not recognize the role of the goal for which the anonymity is sought. Starting with the distinction between intentional and unintentional anonymity (which are usually taken to be the same) and the general concept of the non-coordinatability of traits, we offer a logical analysis of anonymity and identifi cation (understood as de-anonymization). In our enquiry, we focus on the intentional aspect of anonymity and develop a metaphor of an “anonymity game” between “perpetrator” and “detectiv

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