MWC 2017: Panasonic Demonstrates Store Window as a Transparent Screen
 

At Mobile World Congress this year, Panasonic demonstrated a glass that can be turned into a display in an instant. The solution relies on a thin film between the sheets of glass that can quickly change its properties when electricity is supplied, allowing a rear projector to focus and provide an image. The system is currently aimed at retailers that want to attract more attention to their stores and shelves. The company says that the first deployments of the technology are expected this spring.

http://www.anandtech.com/show/11178/...-large-display