クレジットカードの不正を見抜く秘密の仕掛け 紫外線を当てるとロゴ浮かぶ – livedoor
livedoor |
クレジットカードの不正を見抜く秘密の仕掛け 紫外線を当てるとロゴ浮かぶ
livedoor クレジットカードの不正を見抜く仕掛けについて解説している。紫外線をカードに当てると、紫外線の下でしか見えないロゴなどが浮かぶ。不正なカードを見分けるために、 … |
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