Authorizing the use of a biometric card
OwnerMoon J. Kiminventor
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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.
Claims17
A biometric card having a biometric sensor used for authorizing the use of the card, comprising:
- a biometric fingerprint imager, comprising:
- a fingerprint sensor configured to sense a fingerprint of the card user;
- an authenticator configured to authenticate the sensed fingerprint information;
- a biometric sensor, comprising:
- a red laser configured to emit a first laser light;
- an infrared (IR) laser configured to emit a second laser light;
- 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;
- a processing component configured to estimate a SpO2 level based on the ratio of the first and second waveforms;
- and
- an authorizing component configured to authorize use of the card based on the fingerprint authentication and the SpO2 level estimate.
A method for providing a biometric card having a biometric sensor used for authorizing the use of the card, comprising:
- providing a biometric fingerprint imager, comprising:
- a fingerprint sensor configured to sense a fingerprint of the card user;
- an authenticator configured to authenticate the sensed fingerprint information;
- providing a biometric sensor, comprising:
- a red laser configured to emit a first laser light;
- an infrared (IR) laser configured to emit a second laser light;
- 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;
- a processing component configured to estimate a SpO2 level based on the ratio of the first and second waveforms, and from the SpO2 level, determine whether the fingerprint is sensed from live human skin;
- and
- an authorizing component configured to authorize use of the card based on the fingerprint authentication and the live human skin determination.
A method for authorizing the use of a biometric card, comprising:
- sensing a fingerprint of the card user;
- authenticating the sensed fingerprint information;
- estimating the SpO2 level of the card user;
- and
- authorizing the use of the card based on the fingerprint authentication and the SpO2 level estimate,
- wherein a sensor is used to estimate the SpO2 level of the card user,
- wherein the sensor calculates the SpO2 level estimate by emitting a light from a red laser, emitting a light from an infrared (IR) light, and estimating the SpO2 level the based on the red and infrared light absorption characteristics of oxygenated and deoxygenated hemoglobin.
Dependencies are inferred from the claim text.