SYSTEMS AND METHODS OF INTERACTION IWTH INVISIBLE PRINTING
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Aug 22, 2008
filing date -
Aug 22, 2008
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Abandoned
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Abstract
Systems and methods of interaction with invisible printing. In one embodiment, a printed page includes a printable surface, an invisible machine readable code disposed on the printable surface; and a human viewable image disposed on the printable surface. The invisible machine readable code may not absorb or reflect visible light substantially differently from the printable surface, in one embodiment. The invisible machine readable code may be detectable when exposed to infrared and/or ultraviolet light.
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