Patent ID: 8875242

Claim:
A network communication method of a device in which at least two applications including a first application and a second application, are installed, with a server, the network communication method comprising: requesting by the second application, the server to authenticate the device in an authentication; generating a device-server session for communication between the server and the device based on the authentication of the device by the server; requesting by the first application, access to the server through the device-server session; and receiving content from the server based on the first application accessing the server, if permission for the first application to access the server is obtained, based on a privilege level of the first application, wherein: the at least two applications have different privilege levels, and the privilege levels are related with security levels to authenticate the at least two applications in the device, the at least two applications receive key information provided by the server, and the key information comprises identification information about developers of the at least two applications.