Xeno Perception

A major problem with alien species unified under a single banner, such as the Hyperion Federation, is that each one has evolved under the light of different stars, often in different stages. This leads them to see light differently from other species. To an alien, their visible light section of the electromagnetic spectrum could be well within the ultraviolet area. Humans will not be able to see their writing or what their screens are displaying for example. Federation screens are designed to be able to emit any frequency of the electromagnetic spectrum. Allowing different species to see the screen as it emits both human red light and red of another species, simultaneously, for example. For the few that cannot perceive light, they also vibrate very softly.