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.
Claims19
A method for authorizing use of a biometric card, comprising:
- sensing a fingerprint of a card user;
- authenticating the sensed fingerprint information;
- estimating an SpO2 level of the card user;
- and
- authorizing the 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
- an authorizing component configured to authorize use of the card based on the fingerprint authentication and the SpO2 level estimate.
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 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.
Dependencies are inferred from the claim text.