Genoma Grotesk is a variable screen font, which adjusts to its surroundings in real time. It was developed by Robin Eberwein as part of his Bachelor thesis at SUPSI in Canobbio, TI. The font is primarily designed for screen applications such as digital posters. Depending on the relevant light situation in the surroundings, its strength changes – from light-faced to bold or vice versa – in order to ensure there is always optimal legibility. The project underwent three work stages: First of all the font was digitalised so that 81 different weights could be worked out, which enable a smooth transition from light-faced to bold on the screen. The second step was to define and technically implement the interaction between the font strength and the surrounding brightness. Finally a video, an interactive website and various print products were created, which are for the presentation and documentation of the project. Additional applications for Genoma Grotesk are being considered in the field of entertainment and marketing.