| 摘要 |
A secure economic transaction device includes a memory for storing user account information, a temporary code generator coupled to the memory and operable to generate a time-based code that is valid for only a finite amount of time, a programmable magnetic stripe on a surface of the device and operable to magnetically transmit at least a portion of the user account information and the temporary code to a stripe reader, and stripe programming circuitry located on the device, coupled to the temporary code generator, and operable to dynamically program the magnetic stripe with the code. Also provided is a method for conducting the transaction.
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