Patent ID: 9396368
Filing Date: 2016-07-19
CPC Classification: G06K,G06Q,H01Q,H04B,H04W,Y02D

Claim Text:
1. A payment object reader comprising: a near field communication (NFC) antenna configured for reading a NFC enabled object, wherein the NFC antenna is subject to detuning away from a predetermined resonant frequency of the NFC antenna when a metal or conductive portion of the NFC enabled object is within a detuning distance from the NFC antenna; a proximity sensor configured to detect that the NFC enabled object is within the detuning distance relative to the NFC antenna; a NFC tuning subsystem configured to control the tuning of the NFC antenna when the proximity sensor detects that the NFC enabled payment object is within the detuning distance relative to the NFC antenna, wherein the tuning of the NFC antenna is controlled to allow reading the NFC enabled payment object when the NFC enabled payment object is within the detuning distance; and wherein the proximity sensor includes a tamper mesh connected to an inductance measuring circuit, and wherein the inductance measuring circuit is configured to detect a change in inductance caused by the proximity of a metal object to the tamper mesh.