| 摘要 |
A portable electronic device has an attribute memory such as a one-time programmable read-only memory that non-rewritably stores an original attribute characterizing an authenticatee. When the authenticatee uses the portable electronic device at an authentication terminal, the authenticatee inputs the same attribute to the authentication terminal. The input attribute is sent from the authentication terminal to the portable electronic device and compared with the original attribute in the portable electronic device. Alternatively, the original attribute is sent from the portable electronic device to the authentication terminal and compared with the input attribute in the authentication terminal. The use of a non-rewritable attribute memory improves the security of the authentication system.
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