| 摘要 |
A system for determining the presence of an identifier (7, 7') inside a passenger compartment (2), such as a passenger compartment (2) of a motor vehicle (1), includes: a fixed transmitter (3), associated with the passenger compartment (2), including at least one transceiver (4) and at least one processing unit (5); at least one mobile identifier (7, 7') including a transceiver (8, 8') and a processing unit (9, 9'), the respective transceivers (4, 8, 8') of the transmitter (3) and of the identifier (7, 7') being capable of exchanging wireless signals; and a comparison unit capable of comparing a signal, originating from the identifier (7, 7'), received by the transmitter (3), with at least one characteristic signature of the inside of the passenger compartment (2), the identifier (7, 7') being assumed to be located inside the passenger compartment (2) when the comparison unit returns a positive comparison result.
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