Apparatus and method by which user device in home network system transmits home-device-related information

A first device for sharing information related to a home device in a home network system, the first device comprising:

• at least one processor, wherein the at least one processor is configured to:
• establish a session with at least one second device,
• obtain, from at least one specified home device, a first identification information of the at least one specified home device, a second identification information for identifying the at least one specified home device, a third identification information for identifying a group of the at least one specified home device, and a first authentication information including information on a key for authenticating access to the at least one specified home device, and
• transmit the first identification information, the second identification information, the third identification information, and the first authentication information to the at least one second device.

A service server for sharing information related to a home device in a home network system, the service server comprising:

• a receiver;
• a transmitter;
• and
• at least one processor, wherein at least one processor is configured to:
• receive, from a first device, at least a piece of a first identification information of a specified home device, a second identification information for identifying the specified home device, a third identification information for identifying a group of home devices or a first authentication information including information on a key for authenticating access to the specified home device, and
• store at least a piece of the first identification information, the second identification information, the third identification information or the first authentication information as a home device registration information for at least one second device,
• wherein the first device and the at least one second device are in a state where a session is established.