antenna 70 or additional non conducting fascia cover the antenna 60 should not be placed next to a fluorescent light fixture or other rf radiating devices in some cases a metal trim could be replaced with similar looking non conducting trim antenna 70 fig1 shows several trim antenna 70 side views each with an antenna 60 inside and one commercial antenna 74 in a preferred embodiment fig6 shows a typical atm 100 installation which will have a plurality of fiber optic installations 40 a plurality of light sensors 30 and at least one radio detection trim antenna 70 the card reader 104 may be protected without attaching this alarm apparatus 10 or the remote monitors to the card reader 104 as detailed in fig1 and fig1 the card reader 104 protection is also similar to the fig4 critical device 120 installation other equipment on an atm may be protected such as the keypad 106 camera deposit slot and the display screen this invention provides an easy addition for older machines as well as a method to protect other areas or critical devices 120 from intrusion or compromise fig1 shows an example of an atm 100 with card reader 104 and a manufacturers protection 110 at the card reader slot 102 a preferred embodiment of this invention is the fiber optic installation 40 below the card reader 104 fig1 is a side view i i of the card reader 104 an alternate embodiment of the invention has the light sensor 30 above and or to the side of the card reader some fraud devices are also installed at those locations the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention the scope of the invention is.