What is it about?
Location privacy is important for drivers. Existing location obfuscation techniques focus on two-dimensional (2D) planar areas and overlook the features of road networks. In this paper, we leverage differential privacy and propose a new notion of Road Network-Indistinguishability (RN-Indistinguishability) to measure the indistinguishability of locations in road networks. With the RN-Indistinguishability, we design a Cloaking Region Obfuscation (CRO) mechanism to protect the location privacy of vehicles on roads.
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Why is it important?
The proposed CRO mechanism is proved to achieve RN-Indistinguishability and can be generalized with road network features holding the triangle inequality. Comprehensive experiments show that the CRO mechanism outperforms existing 2D obfuscation mechanisms in real-world road networks.
Perspectives
This paper extends the metrics of the traditional obfuscation mechanism. I hope this paper can help other researchers in road network location privacy.
Baihe Ma
University of Technology Sydney
Read the Original
This page is a summary of: New Cloaking Region Obfuscation for Road Network-Indistinguishability and Location Privacy, October 2022, ACM (Association for Computing Machinery),
DOI: 10.1145/3545948.3545982.
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