Patent ID: 7814319

Claim:
A mobile communication system which supports information exchange and fostering of human relations between a plurality of users, comprising: a mobile communication device comprising: a wireless communication unit configured to transmit and receive wireless communication data; a metadata storage unit configured to store, in the mobile communication device, metadata relating to activities and interests of a user of the mobile communication device, said metadata including a log providing information on locations visited by the user; and a central control unit configured to: manage the storage of metadata in said metadata storage unit, wherein said central control unit: partition said metadata storage unit by security level and category, store metadata received through said wireless communication unit in a corresponding partition of the metadata storage unit based on matching the received metadata with a security level and category, wherein the metadata received through a secure communication path is set to a higher security level, and other data is set to a lower security level, and authenticate a stationary communication device according to a predetermined authenticating procedure; supply, to the stationary communication device, a first security level indicating a highest security level of metadata permitted to be transmitted from the mobile communication device to the stationary communication device, the first security level not to exceed a security level permitted by the predetermined authenticating procedure; and said stationary communication device configured to: acquire said first security level and a second security level from another mobile communication device indicating a highest security level of metadata permitted to be transmitted from the another mobile communication device to the stationary communication device; compare said first and said second security levels; acquire metadata, which corresponds to the higher of the first and second security levels, from the mobile communication device and the another mobile communication device; compare the acquired metadata; and display common results from the acquired metadata based on the result of the comparison.