| 摘要 |
A communications system comprises at least one portable device (14) capable of wireless message transmission and at least one other device (10) capable of receiving such a message transmission. The portable device is arranged to broadcast a series of inquiry messages each in the form of a plurality of prefetermined data fields arranged according to a communication (e.g. Bleutooth), and is arranged to add to each message (Fig. 3) prior to transmission an additional data field carrying personal data of a user of the portable device, with the other device (10) receiving the additional data and varying at least one operational parameter (B) in response. The system allows environments or local equipment to be automatically responsive to simple, periodic, locally broadcast auras from a user's portable telephone or the like.
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