Security enhanced document and method of making the same

Details Security enhanced document and method of making the same Security enhanced document and method of making the same

A - Human Necessities

63

F

A63F 3/06 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2299074

A document, preferably in the form of a lottery ticket has a security system in which a substrate has thereon an encoded game data portion including a base layer printed with an ink having a first reflectance value as measured by the reflectance of a given wavelength of light and a second layer of ink having a second reflectance value together having an encoded pattern of symbols. The encoded game data portion is covered with a scratch-off layer in which improper removal of the scratch- off layer can be detected through either the change in the reflectance pattern of the encoded game data portion or by an alteration in the encoded pattern of symbols.

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