ETIAS will be a mandatory entry requirement for visa-exempt third-country nationals soon after it is made available. From this point, all non-EU visitors shall undergo safety screening before entering Portugal or any of the other ETIAS countries.
Currently, travellers from places included on the EU’s list of visa-exempt nations can access the Schengen Area using just a valid passport. While this has provided quick and easy access to Europe, calls for greater security have led to the development of ETIAS.
ETIAS is not a visa, and individuals from visa-exempt nations will continue to enjoy the benefits of visa-free access from 2022 provided they register with the new system.