Are there any case of this occurring?
I am unaware of any instances of security access cards being cloned by eavesdroppers. In order to eavesdrop on the communication between a passive high-frequency (HF) tag and the reader that controls a door, you would need to be located within only a few feet of the device. The person presenting his or her RFID-enabled badge to the reader would very likely notice you standing there.
—Mark Roberti, Founder and Editor, RFID Journal
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