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Data for your application is the combination of the device owner’s data with data that has been shared by others. An @sign owner’s data is…
Note: The @sign owner’s cloud (remote) @server does not hold the owner’s secret key, which is required to make changes to the data. The local @server on the owner’s device must initialize any data changes.
Data that others have shared with an @sign owner is…
As mentioned above, data is stored encrypted as a key/value pair. The @Client SDK supports a familiar set of methods to store and retrieve data from an @persistence keystore. You should always keep in mind that the @protocol includes strict privacy controls applied to all data in an @persistence keystore.
One super interesting side effect of giving people control of their data and storing it all in one place is that any application that they can choose to reason over any data that they are allowed to access in order to create altogether new user experiences.
For example, their certified messaging application may contain a thread where a group of people are discussing which movie to go see on Wednesday night. If permitted, this information can also be presented as an event in their certified calendar application as well as a group in their certified contacts application.
Applications that only rely on data within its own namespace can also store data in the @persistence keystore if certified as @protocol compliant. If the data being stored rightfully belongs to the person creating it (which is the case most of the time), then they will have control of how it is used and shared with other entities and applications.
If you would like to store application data, you are free to use the @persistence keystore for your persistence if you want to. You may want to get your application certified anyways to advertise that it is privacy compliant and have it included in our list of certified apps.
If your application does not require data persistence on behalf of the person using it; for example, if you just want to make sure that your application is licensed to the person using it, then you do not need to get it certified. You may want to get your application certified anyways to advertise that it is privacy compliant and have it included in our list of certified apps.
For more information about getting your application certified, please see the Certification page.