Importance

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Abstract

A security sheet having with high anti-forgery/falsification property has an engraving layer including a sheet surface provided with an engraved identification image and a visible image non-engraved and being identical in details to the identification image so as to allow observation by comparison. For example, when a policeman questions a suspicious person at night to ask that person to present an identification card, the policeman checks the engraved identification image through tactile sense and visual sense. At the same time, the policeman checks the engraved identification image and the non-engraved visible image identical in details thereto through observation by comparison between both images by visual sense and through face-to-face observation of the person. With this, identity of the person can be authenticated by making use of tactile sense and visual sense complementarily.

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First Claim