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Unique in the Crowd: The privacy bounds of human mobility

Scientific reports, 2013-03, Vol.3 (1), p.1376-1376, Article 1376 [Peer Reviewed Journal]

Copyright Nature Publishing Group Mar 2013 ;Copyright © 2013, Macmillan Publishers Limited. All rights reserved 2013 Macmillan Publishers Limited. All rights reserved ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/srep01376 ;PMID: 23524645

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  • Title:
    Unique in the Crowd: The privacy bounds of human mobility
  • Author: de Montjoye, Yves-Alexandre ; Hidalgo, César A ; Verleysen, Michel ; Blondel, Vincent D
  • Subjects: Cell Phone ; Databases as Topic ; Geography ; Humans ; Mobility ; Privacy
  • Is Part Of: Scientific reports, 2013-03, Vol.3 (1), p.1376-1376, Article 1376
  • Description: We study fifteen months of human mobility data for one and a half million individuals and find that human mobility traces are highly unique. In fact, in a dataset where the location of an individual is specified hourly, and with a spatial resolution equal to that given by the carrier's antennas, four spatio-temporal points are enough to uniquely identify 95% of the individuals. We coarsen the data spatially and temporally to find a formula for the uniqueness of human mobility traces given their resolution and the available outside information. This formula shows that the uniqueness of mobility traces decays approximately as the 1/10 power of their resolution. Hence, even coarse datasets provide little anonymity. These findings represent fundamental constraints to an individual's privacy and have important implications for the design of frameworks and institutions dedicated to protect the privacy of individuals.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/srep01376
    PMID: 23524645
  • Source: MEDLINE
    PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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