Portable consumer device configured to generate dynamic authentication data
First Claim
1. A portable consumer device comprising:
- a batteryless portable body of a consumer device;
memory housed by the portable body, the memory storing dynamic authentication data;
a read-write device housed by the portable body and coupled to the memory, the read-write device being configured to change the dynamic authentication data each time the portable consumer device is temporarily powered by an external device, wherein the read-write device is configured to read the dynamic authentication data from the memory before a transaction, and write updated dynamic authentication data to the memory after the transaction; and
an antenna coupled to the portable body and coupled to the read-write device,wherein the read-write device is configured to function only when receiving power from the external device that is not of the consumer.
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Abstract
Embodiments of the invention provide a portable consumer device configured to store dynamic authentication data in memory. The portable consumer device also includes an interface for transmitting data to and receiving power from an external device. The dynamic authentication data is read from the memory by a read-write device located on the portable consumer device. The authentication data is updated and the updated data may be written into memory using the read-write device. In some embodiments, an authentication value read from the memory may be used to generate another authentication value based on an algorithm. The portable consumer device is further configured to transmit authentication data to an external device. The process of reading, updating, generating, transmitting, and rewriting the authentication data may occur each time external power is provided to the portable consumer device via the interface. The power for operating the components of the portable consumer device may be drawn exclusively from the power received from the external device (i.e., the external power). In some embodiments, a portion of the external power may be temporarily stored on an energy storage means of the portable consumer device.
119 Citations
12 Claims
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1. A portable consumer device comprising:
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a batteryless portable body of a consumer device; memory housed by the portable body, the memory storing dynamic authentication data; a read-write device housed by the portable body and coupled to the memory, the read-write device being configured to change the dynamic authentication data each time the portable consumer device is temporarily powered by an external device, wherein the read-write device is configured to read the dynamic authentication data from the memory before a transaction, and write updated dynamic authentication data to the memory after the transaction; and an antenna coupled to the portable body and coupled to the read-write device, wherein the read-write device is configured to function only when receiving power from the external device that is not of the consumer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification