| 摘要 |
A communications system comprises first (12) and second (14) beacon devices capable of wireless message transmission and at least one portable device (10) capable of receiving such message transmissions. The first beacon is arranged to broadcast a series of inquiry messages (INQ) over a first broadcast range (B.1) and according to a first communications protocol, such as Bluetooth. The portable device (10) detects such inquiry messages and replies with an identifier for the portable device. The first beacon (12) then transmits the received identifier to the second beacon (14), with the second beacon (14) and portable device (10) configured to perform a service interaction when the portable device (10) is within a respective second broadcast range (B.2) of the second beacon (14) and when triggered by the second beacon receiving the portable device identifier. At least one of the first (B.1) and second (B.2) broadcast ranges is relatively short, such as to permit interaction only when the user places the portable device (10) within the respective broadcast range.
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