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A biometrics-enabled smart card for use in transactional or identity applications (e.g., credit cards and identity cards). The biometric smart card includes a substrate, a biometric sensor capable of reading biometric information through the substrate, and a microprocessor to process, store, and aut

A biometrics-enabled smart card for use in transactional or identity applications (e.g., credit cards and identity cards). The biometric smart card includes a substrate, a biometric sensor capable of reading biometric information through the substrate, and a microprocessor to process, store, and authenticate biometric information. The substrate has a Young's modulus of at least abut 50 GPa and a thickness of up to about 0.5 mm.

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1. A biometric smart card for biometric identification or authorization of a user, the biometric smart card comprising a substrate, wherein the substrate is transparent to biometric information and has a Young's modulus of at least 50 GPa and a thickness of up to about 0.5 mm, and wherein the substr

1. A biometric smart card for biometric identification or authorization of a user, the biometric smart card comprising a substrate, wherein the substrate is transparent to biometric information and has a Young's modulus of at least 50 GPa and a thickness of up to about 0.5 mm, and wherein the substrate forms a first outer surface of the biometric smart card;a protective cover, the protective cover forming a second outer surface of the biometric smart card opposite the first surfacea biometric sensor, wherein the biometric sensor is disposed flush with the first outer surface or between the first outer surface and the protective cover and adjacent to the substrate such that the biometric sensor receives the biometric information through the substrate;a microprocessor in communication with the biometric sensor, wherein the microprocessor is disposed between the transparent substrate and the protective cover, and wherein the microprocessor authenticates or identifies the user based upon the biometric information received by the biometric sensor; anda power management system in communication with the biometric sensor and the microprocessor, wherein the power management system provides power to the biometric sensor and the microprocessor. 2. The biometric smart card of claim 1, wherein the substrate comprises a metal, an alloy, a composite material, a transparent material, or combinations thereof. 3. The biometric smart card of claim 2, wherein the transparent material comprises one of a soda lime glass, a borosilicate glass, an alkali aluminosilicate glass, and an alkali aluminoborosilicate glass. 4. The biometric smart card of claim 3, wherein the glass is strengthened and has layer extending from a surface of the glass to a depth of layer in the glass, and wherein the is under a compressive stress. 5. The biometric smart card of claim 4, wherein the compressive stress is at least about 300 MPa, and the depth of layer is at least about 10 μm. 6. The biometric smart card of claim 2, wherein the transparent material further includes indicia printed on a second surface of the transparent material, wherein the second surface is opposite the outer surface. 7. The biometric smart card of claim 2, further comprising a passive display disposed on the substrate and readable through the first outer surface. 8. The biometric smart card of claim 1, wherein the biometric information comprises at least one of a capacitance signal and an optical signal. 9. The biometric smart card of claim 1, wherein the power management system comprises at least one of a power source and an energy storage device. 10. The biometric smart card of claim 9, wherein at least a portion of the power management system is disposed between the substrate and the protective cover. 11. The biometric smart card of claim 9, wherein the power source comprises a power mat or a charger in communication with and external to the biometric smart card. 12. The biometric smart card of claim 9, wherein the power source comprises at least one of a radio frequency power source, an inductive layer, and a photo-electric layer. 13. The biometric smart card of claim 9, wherein the energy storage device comprises at least one of a capacitor and a battery. 14. The biometric smart card of claim 13, wherein the battery is rechargeable. 15. The biometric smart card of claim 1, wherein the biometric sensor is one of a capacitive sensor and a visual sensor. 16. The biometric smart card of claim 1, wherein the biometric information is fingerprint-based or iris pattern-based. 17. The biometric smart card of claim 1, wherein the biometric smart card is self-authenticating. 18. The biometric smart card of claim 1, further including a reader interface, wherein the reader interface is in communication with the microprocessor and transfers data from the microprocessor to an external data processor or data storage unit. 19. The biometric smart card of claim 18, wherein the reader interface comprises a magnetic strip disposed on the second outer surface of the biometric smart card. 20. The biometric smart card of claim 18, wherein the reader interface comprises a wireless communicator. 21. A biometric smart card for biometric identification or authorization of a user, the biometric smart card comprising: a transparent substrate, wherein the transparent substrate is transparent to biometric information and has a Young's modulus of at least 50 GPa and a thickness of up to about 0.5 mm, and wherein the transparent substrate forms a first outer surface of the biometric smart card;a protective cover, the protective cover forming a second outer surface of the biometric smart card opposite the first surfacea biometric sensor, wherein the biometric sensor is disposed flush to the first outer surface or between the first outer surface and the protective cover and adjacent to the transparent substrate such that the biometric sensor receives the biometric information through the substrate;a microprocessor in communication with the biometric sensor, wherein the microprocessor is disposed between the transparent substrate and the protective cover, and wherein the microprocessor authenticates or identifies the user based upon the biometric information received by the biometric sensor; anda power management system in communication with the biometric sensor and the microprocessor, wherein the power management system provides power to the biometric sensor and the microprocessor. 22. The biometric smart card of claim 21, wherein the transparent substrate comprises one of a soda lime glass, a borosilicate glass, an alkali aluminosilicate glass, and an alkali aluminoborosilicate glass. 23. The biometric smart card of claim 22, wherein the glass is strengthened and has layer extending from a surface of the glass to a depth of layer in the glass, and wherein the is under a compressive stress. 24. The biometric smart card of claim 23, wherein the compressive stress is at least about 300 MPa, and the depth of layer is at least about 10 μm. 25. A method of using a smart card, the method comprising: providing the smart card, wherein the smart card comprises: a substrate, wherein the substrate is transparent to biometric information and forms a first outer surface of the smart card, and wherein the substrate has a Young's modulus of at least 50 GPa and a thickness of up to about 0.5 mm;a protective cover, the protective cover forming a second outer surface of the smart card opposite the first outer surface;a biometric sensor disposed between the first outer surface and the protective cover such that the biometric sensor receives the biometric information through the substrate; anda microprocessor in communication with the biometric sensor and disposed between the substrate and the protective cover;scanning the biometric information with the biometric sensor; andcomparing the scanned biometric information with biometric information stored in the microprocessor. 26. The method of claim 25, further comprising one of authorizing a transaction and denying authorization of a transaction. 27. The method of claim 26, wherein authorizing or denying authorization comprises generating a time-sensitive code and comparing the time-sensitive code to an issued code issued by an issuing entity, wherein the transaction is authorized if the time-sensitive code matches the issued code or denied if the time-sensitive code differs from the issued code. 28. The method of claim 25, wherein the substrate comprises a metal, an alloy, a transparent material, or combinations thereof. 29. The method of claim 25, wherein the transparent material comprises one of a soda lime glass, a borosilicate glass, an alkali aluminosilicate glass, and an alkali aluminoborosilicate glass. 30. The method of claim 25, wherein the transparent material is strengthened and has layer extending from a surface of the transparent glass substrate to a depth of layer in the glass, and wherein the is under a compressive stress. 31. The method of claim 30, wherein the compressive stress is at least 300 MPa, and the depth of layer is at least 10 μm.