Abstract: A contents sharing server includes an identifier generation unit configured to assign at least one user identifier for each user, a group matching unit configured to match at least one user identifier with at least one of a plurality of groups, each of the plurality of groups having at least one contents identifier for identifying at least one content to be shared within each of the plurality of groups, a request reception unit configured to receive a request including a contents identifier and at least one user identifier, an identifier determination unit configured to search at least one group matched with the at least one user identifier, and determine whether the searched group has the contents identifier and a contents access authority assignment unit configured to assign authority for accessing contents corresponding to the contents identifier.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing access point information collected at each location, extracting information of nearby access points collected together at a location, where information of a reference access point is collected, from the access point information, calculating a barycentric coordinate using location coordinates of the extracted nearby access points, and determining the calculated barycentric coordinate as a final location of the communication terminal.

Abstract: A method and apparatus for measuring a location of a communication terminal using an access point for a wireless local area network service is provided. The method includes storing access point information collected at each location, extracting information of nearby access points collected together at a location, where information of a reference access point is collected, from the access point information, calculating a barycentric coordinate using location coordinates of the extracted nearby access points, and determining the calculated barycentric coordinate as a final location of the communication terminal.

Abstract: A contents sharing server includes an identifier generation unit configured to assign at least one user identifier for each user, a group matching unit configured to match at least one user identifier with at least one of a plurality of groups, each of the plurality of groups having at least one contents identifier for identifying at least one content to be shared within each of the plurality of groups, a request reception unit configured to receive a request including a contents identifier and at least one user identifier, an identifier determination unit configured to search at least one group matched with the at least one user identifier, and determine whether the searched group has the contents identifier and a contents access authority assignment unit configured to assign authority for accessing contents corresponding to the contents identifier.

Abstract: A method for displaying contents based on seamless information is provided. The method includes receiving display history information of multimedia contents, including stop information indicating a stop location in the multimedia contents, from one of a plurality of devices, generating seamless information about the multimedia contents based on the display history information of the multimedia contents, and transmitting the generated seamless information to one or more of the plurality of devices, where the devices that received the transmitted seamless information store the seamless information and one of the devices displays the multimedia contents based on the stored seamless information.