Google and Apple will soon launch a variant of the Exposure Notification System, called Exposure Notifications Express (ENX). In Portugal, the ENX will not replace the STAYAWAY COVID application. The goal of the ENX is to support public health authorities who do not intend to develop and promote national COVID-19 digital tracing systems, while allowing national citizens to use the basic Google and Apple Exposure Notification features. STAYAWAY COVID will be interoperable with all other countries or regions that adopt ENX or develop their own systems based on Google and Apple Exposure Notifications.