Deterring theft of optical media
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United States of America Patent
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Dec 11, 2012
Grant Date -
Jun 9, 2011
app pub date -
Feb 7, 2011
filing date -
Mar 21, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An optical media disk is treated with a light-sensitive material that impedes the ability of an optical media player from reading data stored on the disk. This light-sensitive material is a material that changes phase upon exposure to one or more wavelengths of light. During the initial phase, the light-sensitive material will render the disk unreadable. After activation, however, the disk becomes permanently readable by conventional optical media players. In this fashion, theft of yet-to-be-activated optical media is deterred.
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