A method for controlling access to a system by means of an identification (ID) transmitter, wherein the ID transmitter is authenticated by virtue of a distance between the ID transmitter and a reference point in the system being checked by transmitting a radio signal, includes receiving a first version of the radio signal at a first time and a second version of the radio signal at a second time. The method also includes determining, based on the first time and on the second time, whether the second version of the radio signal is a relay signal generated from the radio signal as part of a relay attack, and prompting a measure to prevent access to the system if it is determined that the second version of the radio signal is the relay signal.
VERFAHREN UND STEUERGERÄT ZUR ABSICHERUNG EINES ZUGANGS
METHOD AND CONTROL DEVICE FOR SAFEGUARDING ACCESS
PROCÉDÉ ET UNITÉ DE CONTRÔLE DE PROTECTION D'ACCÈS
2023-05-10
Patent
Elektronische Ressource
Deutsch
Europäisches Patentamt | 2019
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