# User Access ```{page-status} usable Mostly usable but needs final review when pages are complete (2026/04) ``` User access focuses on the secure access to application data. The [login](login) procedure is required to access locally stored data. The [registration](registration) procedure is required to access data shared between applications. The above-mentioned procedures are visible to the application user while the actual data exchange between application instances remains seamless. It requires two more features. The [data synchronization](data-synchronization) requires knowledge of users and their roles from the [user registry](user-registry). To set up new users in the user registry, the **registration** procedure is required and to store the database securely, the **secure storage** enabled via **login** is required. ```{plantuml} user-access.puml ``` ```{toctree} :maxdepth: 1 :titlesonly: :hidden: :glob: login registration data-synchronization user-registry security-limitations ```