| 摘要 |
PURPOSE:To provide a method for preventing a card from being modified by recognizing its modification easily at the time of the modification in spite of the provision of a recording part which can carry out writing. CONSTITUTION:An irreversible recording part 3 is mounted onto a card 1 provided with a reversible type thermosensible recording part 2, and at the time of recording by the reversible type thermosensible recording part 2, recording which indicates the substantially same contact as the recording is also carried out by the irreversible recording part 3. If any modification is made to the reversible type thermosensible recording part 2, its indicating content will not meet that of the irreversible recording part 3, so it is possible to find the modification easily. |
