A GLASS IS SAID TO BE MAGICwindow if it is capable of changing its color within seconds when a voltage is applied to it.
The wide spread of MAGICwindow “smart” glass in a wide variety of industries has been hampered by high costs, limited dimensions of products, and other imperfections.
We have dramatically improved the technology and reduced the costs.
http://www.badidee.net/windows/ecw.htm