A server system (10, 50) comprising: a first registering unit for, in response to receiving, from a terminal, a registration request for registering a user of a device in a condition in which a communication between the server system (10, 50) and the device via the Internet is not capable of being executed, registering a user ID for identifying the user; a second registering unit for, in response to receiving information related to registration of a service from the terminal in the condition in which the communication between the server system (10, 50) and the device via the Internet is not capable of being executed, registering service information used when the service is used, the service being provided from a specific server and being used at the device; a third registering unit for, in response to receiving a device ID for identifying the device from the device after registering the user ID and the service information and after the condition in which the communication between the server system (10, 50) and the device via the Internet is not capable of being executed changes to a condition in which the communication between the server system (10, 50) and the device via the Internet is capable of being executed, registering the device ID in association with the user ID; a first receiving unit for receiving the device ID and related information related to the service from the device after registering the device ID; a communicating unit for, in response to receiving the related information, communicating with the specific server using the user ID and the service information for using the service. a first registering unit for, in response to receiving, from a terminal, a registration request for registering a user of a device in a condition in which a communication between the server system (10, 50) and the device via the Internet is not capable of being executed, registering a user ID for identifying the user; a second registering unit for, in response to receiving information related to registration of a service from the terminal in the condition in which the communication between the server system (10, 50) and the device via the Internet is not capable of being executed, registering service information used when the service is used, the service being provided from a specific server and being used at the device; a third registering unit for, in response to receiving a device ID for identifying the device from the device after registering the user ID and the service information and after the condition in which the communication between the server system (10, 50) and the device via the Internet is not capable of being executed changes to a condition in which the communication between the server system (10, 50) and the device via the Internet is capable of being executed, registering the device ID in association with the user ID; a first receiving unit for receiving the device ID and related information related to the service from the device after registering the device ID; a communicating unit for, in response to receiving the related information, communicating with the specific server using the user ID and the service information for using the service.