Patent ID: 8868625

Claim:
A mobile information processor comprising: a processor; and a memory device which stores instructions, which when executed by the processor, cause the processor to: (a) access a space directory which stores identification information of the external apparatus; (b) transmit, in response to a transmission challenge from the space directory, encrypted data of the challenge created by its own secret key together with a public-key certificate to the space directory; (c) receive the identification information of the external apparatus from the space directory; (d) acquire user information from a remote user information database, said remote user information database being configured to, using identification information of said external apparatus, determine the user information; (e) thereafter, transmit, to a service provider, the acquired user information from the remote user information database, said service provider being configured to determine whether a communication service can be provided based on said transmitted user information; (f) communicate with a personal directory which stores original data of the identification information of the external apparatus so as to register position information of the mobile information processor in the personal directory, wherein said external apparatus includes an access point; and (g) in response to a determination that the communication service can be provided based on said transmitted user information transmitted to said service provider, utilize said communication service.