The previous chapter covered a number of different architectural approaches to controlling the admission and redistribution of daylight in art galleries and museums. Generally these involved the orientation and slope of the glazing; sometimes they have incorporated external or internal shading or other light control devices. The features of the systems that have been described varied substantially in complexity, some involving multiple glazing systems with special transmission properties, and others having active controls to regulate light admission. In this chapter we review glazing options and the opportunities that they offer for daylight control, including some materials and glazing systems that have not, as far as I am aware, ever been used in museums. As the previous chapter has looked back at past efforts to enable visitors to experience museums in daylight, the aim of this chapter is to look ahead to some of the emerging technologies, and to consider what they might have to offer for museum lighting.