Method for managing of external devices, method for operating of an external device, host device, management server, and the external device

Disclosed is an external device management method by a host terminal, comprising: a step of obtaining measurement information measured in at least one external device; a step of requesting authentication from a management server; a step of transmitting the obtained measurement information to the management server according to the success of authentication; a step of receiving management information for managing at least one external device, which is generated based on measurement information, from the management server; and a step of managing at least one external device based on the received management information. The method is capable of managing at least one external device connected to the host terminal through the management server.