| http://www.w3.org/ns/prov#value | - Moreover, from the viewpoint of preventing disclosure, when the buyer enters the password data, it is preferable to arrange that the digits of the entered data are displayed only as symbols such as asterisks, for example. [0039] After the password data is input correctly, the transmission and reception unit 9 transmits the product information to the telephone communication management computer 16 v
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