To exploit the full potential of contact tracing and warning apps to break the chain of coronavirus infections across borders and save lives, the Commission, at the invitation by EU Member States, has set up an EU-wide system to ensure interoperability – a so-called ‘gateway'. After a successful pilot phase, the system goes live today with the first wave of national apps now linked through this service: Germany's Corona-Warn-App, Ireland's COVID tracker, and Italy's immuni. Together, these apps have been downloaded by around 30 million people, which corresponds to two-thirds of all app downloads in the EU.