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It is the means to store personal data in a controlled form. It implements a secure repository for the user’s personal information. It is responsible for storing and aggregating user’s information such as navigation history, contacts, preferences, personal information, etc.

It is the means to store personal data in a controlled form. It implements a secure repository for the user’s personal information. It is responsible for storing and aggregating user’s information such as navigation history, contacts, preferences, personal information, etc.

This can be done in Push or Pull mode, i.e., the user can actively decide which information to store and retrieve; or the system can do it automatically by importing information as the y are collected while the user performs his usual activities like browse the web or move about a city. P-DS can store either the original copy of user data or point to other repositories, e.g., to external services that have already collected the data, limiting data replication if desired.