Patent ID: 8123255

Claim:
A document with a security device for confidential information mentioned in the document, the document comprising a window cut in the document, two precut strips in the document at a vicinity of two parallel edges of the window, a first transparent tag on which the confidential information is printed, the first tag being affixed to a first face of the document so as to cover the window and protrude from the document, a second transparent tag covering the window and attached to the first tag on a second face of the document which is opposite the first face, a removable tag for masking the information which is printed on the first tag, the removable tag being fixed to the second tag by an adhesive such that the removable tag is not repositionable in an adhesive manner onto the second tag after being removed therefrom, and the removable tag being of a size to cover an area of the window and the two precut sties.