Access control equipment

Access control equipment comprises an interrogation unit (IU) having means (14) for emitting an interrogation signal, and a plurality of transponders (e.g. T), each transponder (T) having a stored identity code different from that of the other transponders (T). This identity code comprises a plurali...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DODD, HAROLD, STANIER, BRIAN JOHN DR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CALCULATING CHECKING-DEVICES COMPUTING COUNTING GENERATING RANDOM NUMBERS HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS
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