Patent ID: 9262654
Filing Date: 2016-02-16
CPC Classification: G06K

Claim Text:
1. A reading device for contactless communication with a transponder unit, comprising: a first antenna for generating a reading device field in the form of an alternating magnetic field; at least one second antenna, wherein the at least one second antenna is configured and arranged in relation to the first antenna such that simultaneously while performing contactless communication of the reading device via the first antenna with a transponder unit generating communication signals by means of load modulation, through the at least one second antenna a detection signal is generated, wherein the reading device is configured to determine a proximity of the transponder unit communicating with the reading device based on the detection signal, and, based on a determination of the proximity of the transponder unit, the reading device is configured to determine whether the transponder unit communicating with the reading device is an attacking device.