| 摘要 |
A system for providing, via a network, information to the users of terminals such as electronic devices, wherein a third party, who has illegally acquired the identifying information of a user, can be prevented from spoofing by use of another electronic device. A portal system comprises a portal image display apparatus having a device identifying information holding part, a portal image display information requesting signal producing part, a portal image display information requesting signal transmitting part, a portal image display information receiving part and a display part; and a portal image server apparatus having a portal image display information requesting signal receiving part, a portal image display information holding part, a first determining part and a portal image display information transmitting part.
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