| 摘要 |
A mobile telephone comprises reception means (5) for receiving message data including identity data, key data and instruction data from a caller, the identity data relating to the caller and the key data relating to the called unit, memory means (7) for storing caller identity data and associated stored security data, data processing means (6) for combining received identity and key data to produce received security data and comparison means (6) for comparing the received security data with stored security data relating to the received identity data, and for processing the instruction data if the received security data is equivalent to the stored security data, or for rejecting the instruction data if the received and stored security data are not equivalent.
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