The increasing frequency of explosive disasters throughout the world in recent years have created a clear need for the systems to monitor for them continuously for better detection and to improve the post disaster rescue operations. Dedicated sensors deployed in the public places and their associated networks to monitor such explosive events are still inadequate and must be complemented for making the detection more pervasive and effective. Modern smart phones are a rich source of sensing because of the fact that they are equipped with wide range of sensors making these devices an appealing platform for pervasive computing applications. The processing capabilities of the smartphone are fairly good for its sensors to be used in building ex plosive detection systems on them which will make the existing systems more robust and sensing handy to the mobile users. This thesis presents various challenges and opportunities in utilizing the capabilities of the sensors in smartphone for building those systems.