Flip Tint® applies to any new or existing glass surface. Flip Tint® switchable glass smart film was designed for the transportation industry because of its ability to be powered off clear / powered on private and is dimmable. This increases its safety aspects so if a driver looses power it will default to transparent clear not obstructing visibility while driving.Traditionally switchable smart glass smart film was created with the opposite effect of being powered on clear and powered off frosted private.