DETERMINING WHEN TO ESTABLISH A COMMUNICATION CHANNEL FOR ACCESS CONTROL

It is provided a method for determining when to establish a communication channel using an electronic lock (12) controlling access to a restricted physical space (16). The method is performed by a portable key device (2). The method comprises: obtaining (40) a first time-indicator indicating when th...

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Bibliographische Detailangaben
1. Verfasser:	EINBERG, Fredrik
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERATING RANDOM NUMBERS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	It is provided a method for determining when to establish a communication channel using an electronic lock (12) controlling access to a restricted physical space (16). The method is performed by a portable key device (2). The method comprises: obtaining (40) a first time-indicator indicating when the portable key device (2) detects a stop in motion of the portable key device (2); receiving (42) a broadcast message from the electronic lock (12); deriving (44) a second time-indicator based on the received broadcast message, the second time-indicator indicating when the electronic lock (12) determines a stop in motion; determining (46) that a difference between the first timeindicator and the second time-indicator is less than a threshold; and establishing (48) a communication channel between the portable key device and the electronic lock when it is determined that the difference between the first time-indicator and the second timeindicator is less than the threshold.