Denmark released the nationwide contact tracing app SmitteStop that uses the Apple-Google application programming interface (API). Denmark’s Minister of Health and the Elderly Magnus Heunicke said the app is completely on a voluntary basis and is intended to be used only during the COVID-19 pandemic. If a user tests positive for the Coronavirus, they can log into the app using their NemID, a common log-in credential for Danish digital banks, online government services, and some private companies, upon which a notification will be prompted to users who have been in contact with infected users for more than 15 minutes at a distance of 1 metre.