Window branding to your shop front windows can serve several purposes. They make a huge impact on street level, serving to advertise your brand or make potential customers aware of a current promotion.
Contravision is a full colour print applied to the outside of the glass. From the inside it can be seen through, and from the outside, the image is visible, so artwork can cover the full shopfront without obscuring the view from inside.
Frosted vinyl is often used in office buildings to create a bit of privacy in the office as well as continue a theme or pattern through the building.