High variability geographical obfuscation for location privacy

P. Wightman, M. Zurbaran, A. Santander

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


In the last few years, the number of applications that use the location of the users in order to provide a more personalized service have been increasing, mainly due to easy access to low cost smartphones, geographical positioning systems and other factors, like social networking. The concern of protecting this information is also increasing due to the capabilities than an eventual attacker could have if the location information is obtained. Some protection techniques have been proposed in the literature; for example, location obfuscation which slightly alters the location to hide the real one. However, this technique could be filtered out with time series-based mechanisms. In this work, the Pinwheel obfuscation technique is proposed in order to reduce the possibility of EMA-based filtering based on high variability and asymmetry of the induced noise. The results show that the level of filtered noise is reduced from 35% in N-RAND and 30% in θ-Rand obfuscation techniques, to 15% in Pinwheel, with asymmetric scenarios, while preserving a long final average distance from the original path after a filtering attack.

Original languageEnglish (US)
Title of host publicationProceedings - International Carnahan Conference on Security Technology
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479908899
StatePublished - Oct 12 2014
Externally publishedYes
Event2013 47th International Carnahan Conference on Security Technology, ICCST 2013 - Medellin, Colombia
Duration: Oct 8 2013Oct 11 2013

Publication series

NameProceedings - International Carnahan Conference on Security Technology
ISSN (Print)1071-6572


Conference2013 47th International Carnahan Conference on Security Technology, ICCST 2013

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Law

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