Contrast markings are extremely important for visually impaired people who do not use a white cane, as they allow them to perceive glass surfaces in time and prevent collisions. Visibly highlighted elements improve orientation in space and allow more independent and safer movement.

Glass surfaces are often marked with institutional logos, signs or various aesthetic elements. However, in most cases these markings lack contrast and often do not meet standards, as the desire for aesthetic minimalism leads to the use of subtle patterns or translucent materials that do not provide the necessary visual perception for visually impaired people. Therefore, the actual accessibility requirements must be taken into account when designing and implementing glass surfaces.

Contrasting markings on glass doors and surfaces are key to ensuring safety and accessibility. Glass doors should be fitted with continuous, well-contrasted strips at least 7.5 cm wide. The strips should be installed at two heights: 90-100 cm and 130-140 cm above the floor. In addition, the door frame shall be clearly marked with a visual marking of at least 5 cm in width to ensure better visibility and safe use of the glass surfaces.