SECURE DATA PROTECTION OPTICALLY VARIABLE LABELS AND FOILS
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United States of America Patent
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app pub date -
Apr 30, 2013
filing date -
Feb 5, 2002
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Abandoned
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Abstract
Embodiments of the invention, therefore, provide improved systems and methods for tracking targets in a simulation environment. A security device having a first layer that carries indicia arranged to present covert information. Embodiments of the invention may include a second layer that carries decoding optical elements. In some embodiments, the second layer is arranged to be moveable relative to the first layer from a first position to a second position. In some embodiments, when in the second position, the optical elements serve to cooperate with the indicia so as to reveal the covert information for visual observation.
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