Apparatus and methods for detecting concealed personal security threats may comprise conventional mirrors and less conventional arrays of Hall-effect sensors, soft iron cores, magnetometers and the like, preferably at least two axis sensors. The concealed personal security threats may comprise, for example, sticky devices consisting of geographic position sensors for covertly broadcasting motor vehicle location data, of so-called Improvised Explosive Devices (IED's) which may be covertly or openly affixed to, for example, the undercarriages of motor vehicles using strong magnets and later exploded, the former giving away private location information without the knowledge of a driver or passengers and the latter causing damage to the motor vehicles to which they are affixed and potentially harming a driver, passengers and nearby persons and sticky containers for hiding items among other sticky devices. A sticky container may be used to contain, for example, a vehicle ignition key or contraband. Magnetic fields detected by, for example, arrays of Hall-effect sensors, soft iron cores, magnetometers and the like may be quantified and stored in processor memory as a vehicle magnetic field signature. A processor receiving magnetic field data collected by the arrays may retrieve and subtract known signatures from newly acquired magnetic field data for a given vehicle to obtain location for a magnetic field on the vehicle that may be of potential interest as a harm risk and for personal security.