SYSTEM AND METHOD FOR SELF-AUTHENTICATING TOKEN
First Claim
1. A secure token comprising:
- a substrate layer having an interface therein;
a tamper layer comprising a conductive tamper pattern;
a flex circuit layer comprising a microprocessor, a memory, a timer and a battery, said memory, timer, tamper pattern and interface being connected to said microprocessor and said timer being connected to said battery; and
a smart window layer having a transparent state and an opaque state, wherein said smart window layer changes between said transparent and opaque states with the application of a voltage.
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Accused Products
Abstract
A secure token, possibly in the form of a smartcard, has a smart window with smart materials such as an electrophoretic or an electrochromic layer or assembly. When authenticated, such as by using biometrics or a password, the smart window layer is electronically pulsed, thereby transforming the once opaque layer to transparent and revealing information printed under, on or over the layer, or vice versa, transforming once transparent laminate to opaque and obfuscating printed information. In another embodiment, when the smart window layer is electronically pulsed to transform the once opaque laminate to transparent, a timer is started. At the end of a certain amount of time, the smart window layer is pulsed a second time, thereby transforming the layer back from transparent to opaque.
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Citations
31 Claims
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1. A secure token comprising:
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a substrate layer having an interface therein; a tamper layer comprising a conductive tamper pattern; a flex circuit layer comprising a microprocessor, a memory, a timer and a battery, said memory, timer, tamper pattern and interface being connected to said microprocessor and said timer being connected to said battery; and a smart window layer having a transparent state and an opaque state, wherein said smart window layer changes between said transparent and opaque states with the application of a voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A secure token comprising:
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a housing; a window layer on a portion of said housing, said window layer having a substantially transparent state and a substantially opaque state; and means for controlling said window layer to change between said transparent and opaque states; wherein said window layer at least partially obfuscates printed data when said laminate is opaque and does not obfuscate said printed data when said laminate is in said transparent state. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification