The title is slightly misleading, as the article seems to focus on flying between certain countries. Good luck expecting to cross 90% of the worlds borders with

The title is slightly misleading, as the article seems to focus on flying between certain countries. Good luck expecting to cross 90% of the worlds borders without a paper passport, where these technologies will never appear. The author seems to lack the capacity (or experience!) to imagine other ways of moving around the world that are not flying.