| http://www.w3.org/ns/prov#value | - The wristwatch 2801 comprises an electronic wallet controller 2842 connected to the interface 2841 and made of IC chips or the like, and an identity authentication section 2843 made of a non-volatile memory such as ROM, connected to the electronic wallet controller 2842, and storing credit number data, deposit number data, and specific information for identifying a person targeted for authenticati
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