JPR_V4_N1_RP3 Design and Implementation of Voice, Touch and Gesture based Natural User Interface (NUI) Arpitha D. Apthi T.P. Chaitra P. Harish Kumar B.S. Jayabharathi K. Suresh Journal on Pattern Recognition 2350-112X 4 1 23 29 Capacitive Touch Technology, VR Module, Open CV-Python, Convex Hull Algorithm Natural User Interface system is adopted by using the technology available for the purpose of controlling the devices as well as the systems used in the home automatically. For making the Natural User Interface system easy, the control of all the devices should be brought into one place, which makes home incredible. A variety of home devices can be controlled with the help of a Natural User Interface system. Natural User Interface is built upon aiming to develop the most simple yet, highly efficient form of User interface having touch, voice, and human movements as the key elements. The traditional switches are upgraded with aid of Capacitive Touch Technology. Add-on like Voice is processed with the help of Voice Recognition (VR) module and Gestures are processed with Open Computer Vision Python (CV-Python) using Convex Hull algorithm. These controls are used in order to make it easy for any category of people to use the system with very minimal efforts. It has wide variety of applications and it can also be implemented in Industrial, Educational, Medical, Military Applications. March - May 2017 Copyright © 2017 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13642