The guard rail on the upper level also designed using digital ceramic printing on glass and can be seen by both arriving and departing passengers. While this separates the two groups it creates a shared experience, as both can see the embedded images of flight patterns spanning the globe, at different stages of their journey.

The Chicago O'Hare Airport glass was created using Dip-Tech digital printing technologies, which uses a flat-bed printer to print high resolution, full color images on glass. This process uses six colors of ceramic frit and once the image is applied to the glass, it is sent through a tempering oven to fuse the ceramic frit to the glass surface. After the tempering process, the ceramic frit hardens, resulting in a durable and fade-resistant decorative glass product.