Patent ID: 7984033

Claim:
A data control system connected with a plurality of clients via a network, the data control system comprising: a processor; a storage unit configured to store a plurality of data items; a plurality of communication systems each configured to allow a particular client to communicate with another client using a different communication method; an identification acquisition unit configured to acquire identification for identifying one of a plurality of imaging units provided to the plurality of clients, the identification being registered in the storage unit and related to the data item to be presented, and the imaging unit being configured to capture a still picture or a moving picture of at least one person who has produced the data item to be presented; an image data acquisition unit configured to acquire image data that is the still picture or the moving picture captured using the imaging unit corresponding to the identification acquired by the identification acquisition unit; a presentation unit configured to present, in response to a request from the client, one of the plurality of data items to the client; and a selection unit configured to allow a user of the particular client to select one of the communication systems, wherein the presentation unit is further configured to present the image data acquired by the image data acquisition unit for the user's selection of the communication systems.