The card holder performance of a duty in the card relation is attached is required, method because the publisher approves the aforementioned obligation

摘要

(57) Abstract As for main topic of this invention, the card holder it requires the performance of a duty in the card relation is attached, it is to offer the safe method because the publisher approves the aforementioned obligation, it is possible to actualize the indirect conversation between the parties with the aforementioned method. Substance of the method due to this invention is as follows. The publisher issues the card, each one of the aforementioned card has identifier and fit certification expedient, latter, part is hidden at least by protective expedient. The addition data which corresponds to the identifier of the card is called certification expedient of the card.