| 摘要 |
A portable electronic device is provided with a storage section which stores various pieces of information and a transmitter/receiver section which transmits and receives data to and from external equipment. It is determined whether or not data paired with write data contained in a write command is stored by the storage section when the write command is received by the transmitter/receiver section, the write data is written to the storage section if it is concluded that the data paired with the write data contained in the write command is stored by the storage section, and the transmitter/receiver section is caused to transmit a result of determination on abnormality to the external equipment if it is concluded that the data paired with the write data contained in the write command is not stored by the storage section.
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