Ensuring Location Privacy in Crowdsensing System Using Blockchain

In recent years, crowdsensing has gained prominence as it provides smart solution to a variety of real-world problems. Crowdsensing is an IoT-based data collection environment where workers collect the data from multiple locations for a reward. Such data collection from multiple user devices exposes the precise location of workers, which raises privacy concerns of crowd workers. Such privacy infringement restricts users from participating in the crowd. Hence, the success of crowdsensing is dependent on the security and privacy guarantee promised by such environments. This paper proposes a location privacy preserving technique in crowdsensing environment based on blockchain. Blockchain overcomes the issues in traditional crowdsensing, and the worker location is preserved with the proposed privacy preserving algorithm. The algorithm is implemented, and its performance is experimentally evaluated.