Certification of a key, which a Trusted Platform Module has attested as being non-migratable, can be performed in a single round trip between the certificate authority and the client that requests the certificate. A first group of tags and a second group of tags are identified from a plurality of tags. The user can thus be provided with a personalized multimedia channel with the play list providing the program for each time slot. When it is detected by temperature detecting means on the lower side that the temperature of the lower pressing member increases to temperature near a target temperature corresponding thereto, the two pressing members are brought into a separated state by the contactingseparating mechanism. A method for manufacturing the electromagnetic shielding article comprising steps of: providing a plastic substrate; depositing a nickel vanadium layer on the plastic substrate by radio-frequency induction plasma spraying process; depositing an electromagnetic shielding layer on the nickel vanadium layer; and depositing a protection layer on the electromagnetic shielding layer. The data portion can be stored in a global memory while routing decisions are made on the routing information in the control path.