I have been thinking about these concepts in a person app. The primary point of collaboration in this personal app is the file system in real time. The framewor

I have been thinking about these concepts in a person app. The primary point of collaboration in this personal app is the file system in real time. The framework I settled on for this problem is a security model. In this app there are two types of agents: personal devices and users. Collaboration between devices is unrestricted because they are only physically separated segments of the same single user. Collaboration between users requires a share which is a segment of availability. By default a share is read only. Device identity is not exposed to other users so a separate user will have no idea they are collaborating across different computers if they are owned by the same user. I have not written undo for the file system yet though. A requested feature is file/directory synchronization and I am considering adding desktop/camera video sharing.