Window film is a technique that involves applying adhesive films, often micro-perforated and transparent, to the inside of shop windows or storefront windows. It allows for the display of advertising messages or attractive visuals while preserving interior brightness. This method offers protection against external damage such as vandalism or graffiti, ensures the privacy of interior spaces, and can enhance brand image, particularly through aesthetic effects like sandblasting. It is used in marketing and retail to attract attention, promote temporary offers, and strengthen the visual identity of premises.