Securing data transfers with relativity (IMAGE) Université de Genève Caption A graph with its 3-colouring. For each edge, we check that the two connected vertices are of different colours. Credit © All rights reserved Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.