A precautionary measure against wireless phone-triggered Improvised Explosive Devices (IEDS) is described that forces premature detonation of the IED at a safe location, such as an unmanned checkpoint, thereby reducing the effectiveness of the IED. Embodiments of the invention provide for transmitting directionalized, low power alerting signals (e.g., paging, ringing, message waiting, text messages) from a stationary wireless terminal advantageously positioned a safe distance from a prospective target area, to mobile stations within a portion of a wireless service area defining an “IED detonation zone.” In such manner, mobile stations within the IED detonation zone that are IED triggering devices (as well as mobile stations that are not IED triggering devices) will receive the alerting signals, thereby forcing premature detonation of IEDs in the detonation zone.