Processing interaction requests with user specific data on a shared device

A shared communication system associates a plurality of owner profiles with the device and processes user interaction requests based on information included in the owner profiles. The communication system classifies incoming requests based on whether the results of a request should be personal to one user, shared among several users, or generic to all users, and processes requests according to the classification. In one embodiment, the user request is targeted at establishing a video call session between a user of the communication system and one or more other target recipient users of a communications system. The communication system determines which user to associate with the outgoing video call based on which user has the target recipient in an associated contacts list.