Apparatus for distinguishing forged fingerprint and method thereof
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United States of America Patent
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Oct 30, 2012
Grant Date -
Apr 22, 2010
app pub date -
Oct 20, 2008
filing date -
Oct 20, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for distinguishing forged fingerprint and a method thereof are disclosed. A different threshold angle for total reflection is applied when forged fingerprint is touched on a fingerprint input surface of a prism, and the forged fingerprint distinguishing apparatus and method use the above fact. Accordingly, using a separate light source, from which a ray of light is emitted with a light axis at a predetermined range of incident angle, acquired fingerprint image is compared and it is determined whether the fingerprint image corresponds to authentic fingerprint or forged one.
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