Authorizing the use of a biometric card
First Claim
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1. A method for authorizing the use of a biometric card, comprising:
- sensing a biometric identification reading associated with skin;
generating a first photocurrent signal based on reflective scattering of a first laser light generated by a first laser,generating a second photocurrent signal based on reflective scattering of a second laser light emitted by a second laser,converting the first photocurrent signal to a first waveform and converting the second photocurrent signal to a second waveform, wherein one of the first and second lasers is an infrared (IR) laser;
determining a relative absorption of the first and second waveforms; and
authorizing use of the card in response to an authentication of the sensed biometric identification reading and the relative absorption.
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Abstract
Embodiments of the present invention provide a system and method for authorizing the use of a biometric transaction card. Specifically, embodiments of the present invention provide a biometric card having a biometric sensor to determine whether the biometric information (fingerprint) is from human skin. In a typical embodiment, the cardholder approaches a magnetic reader with the card. The user places his/her finger on the SpO2 sensor of the card. The sensor estimates the SpO2 level. Card authorization is based, in part, on the estimated SpO2 level.
9 Citations
20 Claims
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1. A method for authorizing the use of a biometric card, comprising:
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sensing a biometric identification reading associated with skin; generating a first photocurrent signal based on reflective scattering of a first laser light generated by a first laser, generating a second photocurrent signal based on reflective scattering of a second laser light emitted by a second laser, converting the first photocurrent signal to a first waveform and converting the second photocurrent signal to a second waveform, wherein one of the first and second lasers is an infrared (IR) laser; determining a relative absorption of the first and second waveforms; and authorizing use of the card in response to an authentication of the sensed biometric identification reading and the relative absorption. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing a biometric card having a biometric sensor used for authorizing the use of the card, comprising:
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providing a biometric imager, comprising; a biometric skin sensor configured to sense a biometric reading associated with skin; providing a biometric sensor, comprising; a first laser configured to emit a first laser light; a second laser configured to emit a second laser light, wherein one of the first and second lasers is an infrared (IR) laser; at least one photodetector configured to generate a first photocurrent signal based on the reflective scattering of the first laser light and generate a second photocurrent signal based on the reflective scattering of the second laser light; an analog-to-digital converter configured to convert the first photocurrent signal to a first waveform and convert the second photocurrent signal to a second waveform; and a processing component configured to estimate a SpO2 level based on the ratio of the first and second waveforms; and providing an authorizing component configured to authorize use of the card in response to an authentication of the sensed biometric reading and the estimated SpO2 level. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A biometric card having a biometric sensor used for authorizing the use of the card, comprising:
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a biometric imager, comprising; a biometric skin sensor configured to sense a biometric reading associated with skin; a biometric sensor, comprising; a first laser configured to emit a first laser light; a second laser configured to emit a second laser light, wherein one of the first and second lasers is an infrared (IR) laser; at least one photodetector configured to generate a first photocurrent signal based on the reflective scattering of the first laser light and generate a second photocurrent signal based on the reflective scattering of the second laser light; an analog-to-digital converter configured to convert the first photocurrent signal to a first waveform and convert the second photocurrent signal to a second waveform; and a processing component configured to determining a relative absorption of the first and second waveforms; and an authorizing component configured to authorize use of the card in response to an authentication of the sensed biometric reading and the relative absorption. - View Dependent Claims (18, 19, 20)
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Specification