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Smartphones are usually provided with indoor positioning services by third-party positioning service providers, in which the unique privacy leakage risk has become a major factor limiting its development.How to protect the privacy of users and data in the positioning process has become an important issue to be solved.The research progress of indoor positioning privacy protection in recent years was reviewed.The commonly used indoor positioning technologies were introduced, different implementation architectures of indoor positioning systems and their threat models, privacy protection requirements were discussed, security technologies applied to indoor positioning privacy protection were summarized, indoor positioning privacy protection schemes for different architectures were classified and introduced, and the performance of different schemes and their advantages and disadvantages were comprehensively compared and analyzed, and finally future research trends were summarized and looked forward to. |
