Anti-fraud biometric scanner that accurately detects blood flow
First Claim
1. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
- a) biometric scanning means for obtaining a biometric sample from the object;
b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human; and
c) deception detection means for determining if the object is attempting to deceive the blood flow detection means.
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Accused Products
Abstract
The invention discloses an anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human. The anti-fraud biometric scanner has biometric scanning means for obtaining a biometric sample from the object, blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human, and deception detection means for determining if the object is attempting to deceive the blood flow detection means. The blood flow detection means comprises a first light source for illuminating the object, a photodetector for measuring light energy from the object, and computing means for controlling the first light source and processing output from the photodetector. The deception detection means provides means for detecting movement by the object in an attempt to deceptively simulate blood flow. The means for detecting movement uses the computing means and turns off the first light source, turns on a second light source, measures any time-varying light energy from the object, and, if the measured time-varying light energy is above a threshold, determines that fraud is occurring.
460 Citations
45 Claims
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1. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
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a) biometric scanning means for obtaining a biometric sample from the object; b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human; and c) deception detection means for determining if the object is attempting to deceive the blood flow detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
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a) biometric scanning means for obtaining a biometric sample from the object; b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human; and c) means for detecting movement by the object in an attempt to deceptively simulate blood flow.
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31. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
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a) biometric scanning means for obtaining a biometric sample from the object; b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human; and c) means for detecting whether the object has a light source that it is using in an attempt to deceptively simulate blood flow.
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32. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
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a) biometric scanning means for obtaining a biometric sample from the object; b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human, further comprising; i) a first light source for illuminating the object; ii) a photodetector for measuring light energy from the object; iii) computing means for controlling the first light source and processing output from the photodetector; and c) deception detection means wherein the computing means turns off the first light source, turns on an infrared light source, measures any time-varying light energy from the object, and determines that fraud is being attempted if the measured time-varying light energy is above a threshold.
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33. An anti-fraud biometric scanner that determines whether an object exhibits characteristics of blood flow consistent with that of a live human, comprising:
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a) biometric scanning means for obtaining a biometric sample from the object, b) blood flow detection means for determining whether the object exhibits characteristics of blood flow consistent with that of a live human, further comprising; i) a light source for illuminating the object; ii) a photodetector for measuring light energy from the object; iii) computing means for controlling the light source and processing output from the photodetector; and c) deception detection means wherein the photodetector measures light energy emitted by the object when the light source is off, and wherein the computing means determines that fraud is being attempted if the measured light energy is above a threshold.
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34. A method for rapidly determining whether an object presented to a biometric scanner exhibits characteristics of blood flow consistent with that of a live human, comprising the steps of:
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a) illuminating the object with a first light source, b) measuring the light energy from the object to produce a first measurement, c) a blood flow detection step, wherein the first measurement is processed to determine if the measurement is consistent with blood flow of a live human, and d) a deception detection step, wherein attempts to deceive the blood flow detection step are detected. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A method for rapidly determining whether an object presented to a biometric scanner exhibits characteristics of blood flow consistent with that of a live human, comprising the steps of:
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a) illuminating the object with a first light source, b) measuring the light energy from the object to produce a first measurement, c) a blood flow detection step, wherein the first measurement is processed to determine if the first measurement is consistent with blood flow of a live human, and d) a deception detection step, wherein attempts to deceive the blood flow detection step are detected, further comprising; i) extinguishing the first light source, ii) measuring the light energy emitted by the object while the first light source is extinguished to produce a second measurement, iii) illuminating the object with a second light source, iv) measuring the time-varying light energy from the object while the first light source is extinguished and the object is illuminated with the second light source to produce a third measurement wherein it is determined that fraud is being attempted if the second or third measurement is above a threshold.
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Specification