The objective of this thesis is to design and implement a portable, smart body sensor device will allow anyone to obtain important vital (physiological) data anytime and anywhere. These vital data include physiological activities, skin/core body temperature, heart rate, and electrocardiography (ECG). Moreover, the designed portable device could in future leverage smart devices to connect to Cloud framework, which will create a virtual interface with physicians and other authorized individuals to access an individual's health data. This smart body sensor service system could be used as continuous monitoring device that alerts the doctor/center when some critical value is observed. Proposed design could be a paradigm shift for monitoring the critically ill, personnel working in high-risk professions or any individual in the society. By streamlining doctor visits and providing health feeds in real time, this approach could offer a solution to the shortage of family doctors in the US.