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openPDS: Protecting the Privacy of Metadata through SafeAnswers

Figure 3

openPDS system's architecture.

LBSinc web or mobile app sent a request to the user's openPDS. The request is passed on to the LBSinc SA module, which requests access to the database in order to retrieve the metadata needed to compute the answer. The SA module computes the answer, which is then validated by the PDS Front-End and send back to the web or the mobile app.

Figure 3