[PiN-diskusjon] Nature: Unique in the Crowd: The privacy bounds of human mobility

Petter Reinholdtsen pere at hungry.com
Tir 4. Jun 2013 09:35:39 CEST


<URL: http://www.nature.com/srep/2013/130325/srep01376/full/srep01376.html >

  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.

Det er visst enklere å spore enkeltindivider med mobilbruksdata enn
jeg trodde.

-- 
Vennlig hilsen
Petter Reinholdtsen



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