Recent trends in techonology indicates that pervasive computing is becoming a norm in every realm of daily activity. With a continuing advancements in semiconductor and network technology despite the reduction in manufacturing cost, practical pervasive computing system can now be realized with great momentum. Various sensors technologies together with wireless network standards help ensure the interoperability among devices and seamless adaptation in diverse contexts and environments. Such approach, ultimately, soften the boundary between "computer-world" and physical world allowing them co-exist in the same environment space.