A method of preventing fraud at a self-service terminal is described. The method comprises: receiving a signal from an electromagnetic sensor located in the vicinity of an electromagnetic signal transmitter; monitoring a drive signal being delivered to the electromagnetic signal transmitter; and comparing the drive signal with the electromagnetic sensor signal. The method then ascertains if a state of the electromagnetic sensor signal is inconsistent with a state of the drive signal; and triggers an alarm when the state of the electromagnetic sensor signal is inconsistent with a state of the drive signal.
申请公布号
US8704633(B2)
申请公布日期
2014.04.22
申请号
US201113099795
申请日期
2011.05.03
申请人
ROSS GARY;MITCHELL GRAEME;LOWDEN ALISTAIR;RITCHIE STEVEN;NCR CORPORATION
发明人
ROSS GARY;MITCHELL GRAEME;LOWDEN ALISTAIR;RITCHIE STEVEN