Patent ID: 7840206

Claim:
An authentication method in a plurality of wireless communication apparatuses which communicate with each other and which include a first wireless communication apparatus and a second wireless communication apparatus, the method comprising the steps of: setting a maximum number of one or more other wireless communication apparatuses up to which each wireless communication apparatus authenticates; storing the set maximum number in each wireless communication apparatus; and authenticating the one or more wireless communication apparatuses within the stored maximum number, wherein the one or more wireless communication apparatuses are authenticated by: determining whether a number of authenticated apparatuses is less than the maximum number in each of the first and second wireless communication apparatuses, and if it is determined that the number of authenticated apparatuses is less than the maximum number in both the first and second wireless communication apparatuses, performing the steps of: storing individual information of the first wireless communication apparatus as semi-authentication information and converting the semi-authentication information into code information to visualize in the first wireless communication apparatus; capturing the visualized code information in the second wireless communication apparatus; analyzing the captured code information to obtain the semi-authentication information in the second wireless communication apparatus; and storing the analyzed and obtained semi-authentication information in the second wireless communication apparatus.