Advent of electronics has transformed the human lifestyle into echelons of sophistications. Flexi-electronic technologies such as wearable electronics are the future of mankind enabling the use of electronic integration in daily chores of life - may it be in the robotic arm depicting the human motion from the remote location aiding in the surgery, may it be a layer of skin coat which sense the physical parameters, or may it be integration of electronics in the human body such as pacemaker; the growth of electronic industry has led in simplifying the complex tasks for computations. Nanoscale polymer composites provide virtually ideal design space for the new generation of flexi-electronic materials. The following chapter elaborates one such application of composites in development of flexible electronics with the use of conducting polymer composites (CPCs) which are the class of improvised organic substances showing the electrical properties analogous to metals. CPCs have been trending in the research arena only because of the economic importance, better environmental stability, and improved electrical conductivity, which includes mechanical properties, electromechanical properties, and optical properties. © Springer Nature Switzerland AG 2019. All Rights Reserved.