Patterns — mobile

• Encryption with user-managed keys

  Use encryption in such a way that the service provider cannot decrypt the user's information because the user manages the keys.

• Asynchronous notice

  Proactively provide continual, recurring notice to consented users of repeating access to their personal data, including tracking, storage, or redistribution.

• Ambient Notice

  Provide unobtrusive, non-modal, continuous notice when personal data is being accessed to increase awareness of real-time tracking.

• Active broadcast of presence

  Users may actively choose to automatically provide updates when they want to share presence information, to increase both the relevance of, and control over, their sharing.