FORGERY AND FALSIFICATION PREVENTING CARD

PROBLEM TO BE SOLVED: To obtain a card which can be scarcely forged and prevent the falsification by arbitrarily embedding a perforated hole to write information by drawing an inner pattern so that the previously drawn pattern cannot be externally observed. SOLUTION: In the card such as a prepaid card, a pattern which cannot be externally observed is drawn therein to enhance the security. To prevent the falsification by incorrectly embedding a perforated hole to write information, the pattern is crossed at the hole so that the pattern is preferably difficult to be recovered even if the hole is embedded, and fine foire pattern, lattice foire pattern, oblique lattice foire pattern, network pattern, or waterdrop pattern can be used. As a method for drawing the pattern, a printing method, an etching method using a photoresist, or a method for optically curing by using a photomask is adopted.