Pressure-based activation of fingerprint spoof detection
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United States of America
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May 10, 2022
Grant Date -
Oct 28, 2021
app pub date -
Apr 24, 2020
filing date -
Apr 24, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
In a method for performing operating a fingerprint sensor, an image of a fingerprint of a finger is captured at a fingerprint sensor. A force applied by the finger at the fingerprint sensor is determined, where the force is a measure of pressure applied by the finger on the fingerprint sensor during capture of the image. The force is compared to a pressure threshold. Provided the force satisfies a pressure threshold, a spoof detection operation is performed to determine whether the finger is a real finger. Provided the force does not satisfy the pressure threshold, fingerprint authentication using the image of the fingerprint is performed without performing the spoof detection operation.
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