Light is an intangible but sensitive matter. It influences our behavior and our sensations in space. If, since prehistoric times, light has been a vital issue, today it is also an ecological one. Design must be sustainable for some, and useful or even aesthetic for others. At the end, the user gives meaning to design by appropriating it. By returning to the essence of the gesture and creating a haptic experience, the customer becomes a player of the lighting for a desirable legacy.