The artist looks for characters, words, emotions and facial expressions from personal experience that most people are used too; symbols and meanings such as: the rapid change of time and numbers, the expression of noise, the drifting of eyesight, emotionless computer language and so on. Then transforming these images to highlight the anxious condition that information technology media has brought in the contemporary digital era. “ON/OFF” uses VJ performance related techniques and combines interactive image installation, building and controlling interface to have the audience ponder through the process of interacting and experience if people like us live in an environment full of control and manipulation, as if a power switch has lost its right to act on itself and is unaware.

This thesis first discusses the development and theory of VJ performance. Being in contemporary digital art, the evolution of the multimedia era and the innovative experimenting of digital tools let the VJ performance of real time control of images and real time mixing contents produce much more possibilities, for example combining with other art media such as: dance, installation, architecture, video art, drama…etc. Therefore, creating a new way of art expression, including interactive image installation, multimedia performance, projection mapping…etc. Later on this thesis discusses the effect that information and technology media has brought to humans.