Technologies have been tremendously important for expanding our sphere of existence and solving problems. In the years ahead we envision that technologies will play an important role in probing the depths and opening up new vistas of the human mind. Interface technologies that are available in today's modern society can provide experiences to have people aware of their fundamental attributes and unconscious behaviors, to which they lead their lives without paying much attention. My colleagues and I have developed unique interface technologies based on perceptual characteristics of humans, and have had opportunities to try out the scheme on a range of different people in exhibitions, such as conference technology demonstrations (e.g. Emerging technologies in Siggraph), and presentations in science museums (e.g. National museum of emerging science and innovation (MIRAIKAN)), and in art festivals (e.g. Ars Electronica and Japan Media Art Festival). The link between human perceptual characteristics and interface technologies creates new rules as to how people relate to their environments, and more importantly, such new experiences lead to changes in the way they viewed the world and apprehended self, and become catalysts to create individual opinions. In this presentation, I introduce some of my projects.