Patent ID: 8126142

Claim:
A method of embedding and retrieving variable data encryption of characters on a document, the method comprising the following steps: (a) creating variable data; (b) applying an encrypted copy of the variable data in small dots placed between a group of lines on the document, using a printer capable of varying the printed data; (c) applying a transparent substrate, having a set of matching lines to the group of lines on the document bearing the encrypted copy of the variable data, the set of lines having the remaining and complementary parts of the encrypted copy of the variable data; (d) the combination of the encrypted copy of the variable data on the document and the remaining and complementary parts of the encrypted copy of the variable data on the transparent substrate displaying the variable data encryption of step (b) in a visible plain-text form; wherein the transparent substrate is constructed and arranged to be applied in contact with the document bearing the encrypted copy of the variable data or on a screen displaying the document bearing the encrypted copy of the variable data.