 An electronic tongue is a device used for analyzing chemical compounds in liquids such as saliva or urine. It consists of a sensor array made up of six different metals, which can detect changes in electrical current when exposed to certain chemicals. These changes are then interpreted by a computer algorithm to determine the presence of certain compounds. In this study, the electronic tongue was used to analyze saliva samples from eight people before and after they were infected with SARS-CoV-2, the virus responsible for COVID-19. The results showed that the electronic tongue could accurately identify differences in the saliva samples between those who had been infected and those who had not. This suggests that the electronic tongue may be able to be used to diagnose COVID-19 infection in the future. This article was authored by Magnus Fock, Carolyn Sata, Stefan Serovic and others.