Traveling to the #UK from the EU seems to require a Smartphone with iOS or Android.
Here https://www.gov.uk/guidance/apply-for-an-electronic-travel-authorisation-eta#how-long-it-takes they state that you can also apply for an ETA online.
But on the "apply online" page https://apply-for-an-eta.homeoffice.gov.uk/apply/electronic-travel-authorisation/easier-on-the-app they only mention the app.












